UK FLIGHT DELAY INDEX

derived from CAA punctuality statistics for UK reporting airports

How often are these flights late or cancelled?

Luxair

In the twelve months from July 2025 to June 2026, 23.9% of 1,698 movements arriving into the UK were disrupted — more than fifteen minutes late or cancelled at short notice.

Put the other way round, 76.1% of 1,698 movements met the fifteen-minute convention. These are historical observations, not a forecast.

Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Source: CAA punctuality statistics · snapshot 17/08/2026 10:24 · method route-record-v2.1 · Versioned claims, formulas and entity mapping.

0 operations (0.00%) excluded because their published percentages could not be reconciled to whole numbers. Excluded operations enter neither the numerator nor the denominator. Outcome figures and comparisons are unavailable when the excluded share exceeds fifteen percent.

The four numbers at a glance

23.9% of 1,698 movements were disrupted over July 2025 to June 2026.

Average delay covers delayed movements only. Its range reflects rounded source means and the unknown count of exactly punctual movements.

DisruptionShort-notice cancellationsDelay among delayed movementsOver three hours
23.9% of 1,698 movements2.2% of 1,698 movements19.0–53.0 minutes; delayed denominator 368–939no events in 1,698 movements
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

When late, how late?

no events in 1,698 movements passed the three-hour mark.

The ladder shows how many movements crossed each threshold. Cancellations are separate: 2.2% of 1,698 movements.

DelayShare and sampleOne event per movements
More than 15 minutes21.7% of 1,698 movements4.6
More than 30 minutes11.5% of 1,698 movements8.7
More than 60 minutes4.2% of 1,698 movements23.9
More than 120 minutes0.5% of 1,698 movements188.7
More than 180 minutesno events in 1,698 movementsNo observed events; this is not zero risk.
More than 360 minutesno events in 1,698 movementsNo observed events; this is not zero risk.
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Slightly late or occasionally a disaster?

0.5% of 1,698 movements passed two hours.

The histogram shows the published delay bands. Bucket shares use all reported operations, including unmatched records; cancellations are reported separately.

Nine delay buckets, minutes; share of all recorded operations>15 early342.0%15–1 early68840.5%0–15 late57133.6%16–3017210.1%31–601257.4%61…120623.7%121…18090.5%181…36000.0%>36000.0%D=1,698
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Better or worse since the start of the archive?

Best month: Oct 2021, no events in 53 movements. Worst month: Dec 2022, 35.3% of 150 movements.

The line traces every month. Lower disruption is better; gaps are never zeros. Pandemic readings describe a different operating regime.

Monthly disruption share; gaps mean no published dataJan 2018: 10.9%; sample: 1562018Feb 2018: 22.9%; sample: 144Mar 2018: 17.1%; sample: 158Apr 2018: 13.5%; sample: 170May 2018: 12.6%; sample: 175Jun 2018: 15.1%; sample: 172Jul 2018: 10.4%; sample: 144Aug 2018: 7.2%; sample: 138Sep 2018: 8.8%; sample: 160Oct 2018: 11.8%; sample: 178Nov 2018: suppressed: fewer than twenty movements×Dec 2018: suppressed: fewer than twenty movements×Jan 2019: 13.5%; sample: 1482019Feb 2019: 15.0%; sample: 140Mar 2019: 18.8%; sample: 149Apr 2019: 23.1%; sample: 169May 2019: suppressed: fewer than twenty movements×Jun 2019: suppressed: fewer than twenty movements×Jul 2019: suppressed: fewer than twenty movements×Aug 2019: suppressed: fewer than twenty movements×Sep 2019: suppressed: fewer than twenty movements×Oct 2019: suppressed: fewer than twenty movements×Nov 2019: suppressed: fewer than twenty movements×Dec 2019: suppressed: fewer than twenty movements×Jan 2020: 10.2%; sample: 1472020Feb 2020: 32.9%; sample: 143Mar 2020: 20.9%; sample: 86Apr 2020: suppressed: fewer than twenty movements×May 2020: suppressed: fewer than twenty movements×Jun 2020: suppressed: fewer than twenty movements×Jul 2020: suppressed: fewer than twenty movements×Aug 2020: suppressed: fewer than twenty movements×Sep 2020: suppressed: fewer than twenty movements×Oct 2020: suppressed: fewer than twenty movements×Nov 2020: suppressed: fewer than twenty movements×Dec 2020: suppressed: fewer than twenty movements×Jan 2021: suppressed: fewer than twenty movements×2021Feb 2021: suppressed: fewer than twenty movements×Mar 2021: suppressed: fewer than twenty movements×Apr 2021: suppressed: fewer than twenty movements×May 2021: suppressed: fewer than twenty movements×Jun 2021: suppressed: fewer than twenty movements×Jul 2021: suppressed: fewer than twenty movements×Aug 2021: suppressed: fewer than twenty movements×Sep 2021: 0.0%; sample: 31Oct 2021: 0.0%; sample: 53Nov 2021: 4.0%; sample: 75Dec 2021: 2.8%; sample: 71Jan 2022: 0.0%; sample: 342022Feb 2022: 11.9%; sample: 67Mar 2022: 7.0%; sample: 129Apr 2022: 17.1%; sample: 140May 2022: 7.2%; sample: 152Jun 2022: 16.3%; sample: 153Jul 2022: 9.9%; sample: 142Aug 2022: 5.8%; sample: 137Sep 2022: 16.8%; sample: 155Oct 2022: 13.6%; sample: 154Nov 2022: 9.7%; sample: 144Dec 2022: 35.3%; sample: 150Jan 2023: 16.0%; sample: 1562023Feb 2023: 15.4%; sample: 143Mar 2023: 18.7%; sample: 155Apr 2023: 14.8%; sample: 162May 2023: 14.0%; sample: 178Jun 2023: 18.7%; sample: 182Jul 2023: 9.9%; sample: 162Aug 2023: 18.5%; sample: 151Sep 2023: 18.8%; sample: 160Oct 2023: 20.2%; sample: 168Nov 2023: 26.3%; sample: 167Dec 2023: 26.4%; sample: 159Jan 2024: 21.7%; sample: 1522024Feb 2024: 10.9%; sample: 156Mar 2024: 9.4%; sample: 159Apr 2024: 12.7%; sample: 166May 2024: 19.1%; sample: 173Jun 2024: 19.2%; sample: 146Jul 2024: 16.7%; sample: 132Aug 2024: 13.6%; sample: 125Sep 2024: 20.8%; sample: 144Oct 2024: 23.2%; sample: 151Nov 2024: 19.0%; sample: 142Dec 2024: 30.6%; sample: 134Jan 2025: 18.2%; sample: 1372025Feb 2025: 9.4%; sample: 128Mar 2025: 14.1%; sample: 142Apr 2025: 8.5%; sample: 130May 2025: 19.7%; sample: 137Jun 2025: 27.7%; sample: 137Jul 2025: 30.8%; sample: 117Aug 2025: 16.2%; sample: 111Sep 2025: 32.9%; sample: 140Oct 2025: 26.7%; sample: 146Nov 2025: 25.5%; sample: 141Dec 2025: 26.5%; sample: 147Jan 2026: 19.6%; sample: 1382026Feb 2026: 21.6%; sample: 134Mar 2026: 22.2%; sample: 153Apr 2026: 17.7%; sample: 158May 2026: 22.4%; sample: 156Jun 2026: 24.2%; sample: 157Pandemic regime Jun 2020Summer 2022 breakdown Jul 2022NATS system failure Aug 2023Heathrow fire closure Mar 2025100%0%
Every monthly observation
MonthDisruption on arrivals
Jan 201810.9% of 156 movements
Feb 201822.9% of 144 movements
Mar 201817.1% of 158 movements
Apr 201813.5% of 170 movements
May 201812.6% of 175 movements
Jun 201815.1% of 172 movements
Jul 201810.4% of 144 movements
Aug 20187.2% of 138 movements
Sep 20188.8% of 160 movements
Oct 201811.8% of 178 movements
Nov 2018suppressed: fewer than twenty movements
Dec 2018suppressed: fewer than twenty movements
Jan 201913.5% of 148 movements
Feb 201915.0% of 140 movements
Mar 201918.8% of 149 movements
Apr 201923.1% of 169 movements
May 2019suppressed: fewer than twenty movements
Jun 2019suppressed: fewer than twenty movements
Jul 2019suppressed: fewer than twenty movements
Aug 2019suppressed: fewer than twenty movements
Sep 2019suppressed: fewer than twenty movements
Oct 2019suppressed: fewer than twenty movements
Nov 2019suppressed: fewer than twenty movements
Dec 2019suppressed: fewer than twenty movements
Jan 202010.2% of 147 movements
Feb 202032.9% of 143 movements
Mar 202020.9% of 86 movements
Apr 2020suppressed: fewer than twenty movements
May 2020suppressed: fewer than twenty movements
Jun 2020suppressed: fewer than twenty movements
Jul 2020suppressed: fewer than twenty movements
Aug 2020suppressed: fewer than twenty movements
Sep 2020suppressed: fewer than twenty movements
Oct 2020suppressed: fewer than twenty movements
Nov 2020suppressed: fewer than twenty movements
Dec 2020suppressed: fewer than twenty movements
Jan 2021suppressed: fewer than twenty movements
Feb 2021suppressed: fewer than twenty movements
Mar 2021suppressed: fewer than twenty movements
Apr 2021suppressed: fewer than twenty movements
May 2021suppressed: fewer than twenty movements
Jun 2021suppressed: fewer than twenty movements
Jul 2021suppressed: fewer than twenty movements
Aug 2021suppressed: fewer than twenty movements
Sep 2021no events in 31 movements — small sample, not ranked
Oct 2021no events in 53 movements
Nov 20214.0% of 75 movements
Dec 20212.8% of 71 movements
Jan 2022no events in 34 movements — small sample, not ranked
Feb 202211.9% of 67 movements
Mar 20227.0% of 129 movements
Apr 202217.1% of 140 movements
May 20227.2% of 152 movements
Jun 202216.3% of 153 movements
Jul 20229.9% of 142 movements
Aug 20225.8% of 137 movements
Sep 202216.8% of 155 movements
Oct 202213.6% of 154 movements
Nov 20229.7% of 144 movements
Dec 202235.3% of 150 movements
Jan 202316.0% of 156 movements
Feb 202315.4% of 143 movements
Mar 202318.7% of 155 movements
Apr 202314.8% of 162 movements
May 202314.0% of 178 movements
Jun 202318.7% of 182 movements
Jul 20239.9% of 162 movements
Aug 202318.5% of 151 movements
Sep 202318.8% of 160 movements
Oct 202320.2% of 168 movements
Nov 202326.3% of 167 movements
Dec 202326.4% of 159 movements
Jan 202421.7% of 152 movements
Feb 202410.9% of 156 movements
Mar 20249.4% of 159 movements
Apr 202412.7% of 166 movements
May 202419.1% of 173 movements
Jun 202419.2% of 146 movements
Jul 202416.7% of 132 movements
Aug 202413.6% of 125 movements
Sep 202420.8% of 144 movements
Oct 202423.2% of 151 movements
Nov 202419.0% of 142 movements
Dec 202430.6% of 134 movements
Jan 202518.2% of 137 movements
Feb 20259.4% of 128 movements
Mar 202514.1% of 142 movements
Apr 20258.5% of 130 movements
May 202519.7% of 137 movements
Jun 202527.7% of 137 movements
Jul 202530.8% of 117 movements
Aug 202516.2% of 111 movements
Sep 202532.9% of 140 movements
Oct 202526.7% of 146 movements
Nov 202525.5% of 141 movements
Dec 202526.5% of 147 movements
Jan 202619.6% of 138 movements
Feb 202621.6% of 134 movements
Mar 202622.2% of 153 movements
Apr 202617.7% of 158 movements
May 202622.4% of 156 movements
Jun 202624.2% of 157 movements
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

What did the big disruptions do here?

Each event is compared with the twelve preceding calendar months and the first later return to baseline.

A worse month is not proof the named event caused it. The open data carry no delay-cause field. Recovery is observed for at most eight subsequent months.

EventDirectionDisruption that monthBaseline beforeReturn to baseline
Pandemic regime · Jun 2020Arrivalssuppressed: fewer than twenty movementsno complete baselinenot enough data: needs a complete baseline and a publishable event month
Pandemic regime · Jun 2020Departuressuppressed: fewer than twenty movementsno complete baselinenot enough data: needs a complete baseline and a publishable event month
Summer 2022 breakdown · Jul 2022Arrivals9.9% of 142 movementsno complete baselinenot enough data: needs a complete baseline and a publishable event month
Summer 2022 breakdown · Jul 2022Departures31.7% of 142 movementsno complete baselinenot enough data: needs a complete baseline and a publishable event month
NATS system failure · Aug 2023Arrivals18.5% of 151 movements15.7% across 1,878 flightsreturned after 6 months
NATS system failure · Aug 2023Departures30.7% of 153 movements26.8% across 1,872 flightsreturned after 6 months
Heathrow fire closure · Mar 2025Arrivals14.1% of 142 movements17.7% across 1,737 flightsreturned the next month
Heathrow fire closure · Mar 2025Departures20.3% of 143 movements30.1% across 1,738 flightsreturned the next month
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Which time of year has been hardest?

Highest median: Dec, 28.6% across 4 months. Lowest median: Jul, 10.4% across 5 months.

Even the same calendar month differs across years. This is a record, not a forecast; pandemic years are excluded from the summaries.

Each cell is one calendar month of one year; the number is the share of that month’s arrivals that were disrupted. Darker means worse. A blank cell means no published data, not zero.

Seasonality: calendar month by year; share and nJanFebMarAprMayJunJulAugSepOctNovDec201913.5% of 148 movements15.0% of 140 movements18.8% of 149 movements23.1% of 169 movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movements202010.2% of 147 movements32.9% of 143 movements20.9% of 86 movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movements2021suppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementsno events in 31 movements †no events in 53 movements4.0% of 75 movements2.8% of 71 movements2022no events in 34 movements †11.9% of 67 movements7.0% of 129 movements17.1% of 140 movements7.2% of 152 movements16.3% of 153 movements9.9% of 142 movements5.8% of 137 movements16.8% of 155 movements13.6% of 154 movements9.7% of 144 movements35.3% of 150 movements202316.0% of 156 movements15.4% of 143 movements18.7% of 155 movements14.8% of 162 movements14.0% of 178 movements18.7% of 182 movements9.9% of 162 movements18.5% of 151 movements18.8% of 160 movements20.2% of 168 movements26.3% of 167 movements26.4% of 159 movements202421.7% of 152 movements10.9% of 156 movements9.4% of 159 movements12.7% of 166 movements19.1% of 173 movements19.2% of 146 movements16.7% of 132 movements13.6% of 125 movements20.8% of 144 movements23.2% of 151 movements19.0% of 142 movements30.6% of 134 movements202518.2% of 137 movements9.4% of 128 movements14.1% of 142 movements8.5% of 130 movements19.7% of 137 movements27.7% of 137 movements30.8% of 117 movements16.2% of 111 movements32.9% of 140 movements26.7% of 146 movements25.5% of 141 movements26.5% of 147 movements202619.6% of 138 movements21.6% of 134 movements22.2% of 153 movements17.7% of 158 movements22.4% of 156 movements24.2% of 157 movementsno datano datano datano datano datano data
Month-by-month table: median, observed range and sample
MonthMedianObserved rangeSample
Jan16.0%0.0–21.7%7 months, 921 flights
Feb15.0%9.4–22.9%7 months, 912 flights
Mar17.1%7.0–22.2%7 months, 1,045 flights
Apr14.8%8.5–23.1%7 months, 1,095 flights
May16.6%7.2–22.4%6 months, 971 flights
Jun18.9%15.1–27.7%6 months, 947 flights
Jul10.4%9.9–30.8%5 months, 697 flights
Aug13.6%5.8–18.5%5 months, 662 flights
Sep18.8%8.8–32.9%5 months, 759 flights
Oct20.2%11.8–26.7%5 months, 797 flights
Nov22.3%9.7–26.3%4 months, 594 flights
Dec28.6%26.4–35.3%4 months, 590 flights
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Which routes have the best and worst record?

Lowest disruption: LCY ↔ LUXEMBOURG, 23.5% of 1,565 movements. Highest disruption: MAN ↔ LUXEMBOURG, 27.1% of 129 movements.

The airline table uses this carrier on each route; airport and country tables combine carriers. Each figure is arrivals into its UK airport. Only sufficiently large exact samples enter the ordered comparison.

Observed disruption share by optionLcy ↔ Luxembourg23.5% of 1,565 flightsMan ↔ Luxembourg27.1% of 129 flights
All route comparisons and sample flags
RouteDisruptionCancellationsSample flag
London City ↔ Luxembourg23.5% of 1,565 movements2.2% of 1,565 movementsdescriptive comparison
MAN ↔ LUXEMBOURG27.1% of 129 movements1.6% of 129 movementsdescriptive comparison
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Which UK airports appear in this record?

2 published groups have enough arrivals to describe.

These operations are not matched for season, aircraft or time of day. The table makes no causal comparison.

UK airportDisruptionSample flag
London City23.5% of 1,565 movementsdescriptive comparison
Manchester27.1% of 129 movementsdescriptive comparison
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Arrivals vs departures

23.9% of 1,698 movements arrivals were disrupted, against 37.6% of 1,701 movements departures.

The directions have separate denominators. A departure delay does not establish late arrival at the final destination; legal conditions differ by direction and carrier.

Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Movements past the three-hour mark

no events in 1,698 movements were more than three hours late over July 2025 to June 2026.

Cancellation is counted separately and is not a three-hour delay. Monthly counts cannot establish a passenger claim.

Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Facts about this record

Luxair appears from Jan 2018 to Jun 2026 with 10,831 arrivals.

The bounds describe the published record, not every commercial service. Final point is not necessarily a nonstop destination.

Archive route pairs: 28.

Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

What this data cannot tell you

Delay cause, individual passenger experience, commercial decisions and future performance are not established here.

Also absent are aircraft type, within-month time-of-day splits and cancellations made ahead of the short-notice reporting window.

0 operations (0.00%) excluded because their published percentages could not be reconciled to whole numbers. Excluded operations enter neither the numerator nor the denominator. Outcome figures and comparisons are unavailable when the excluded share exceeds fifteen percent.

Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Quick answers

These answers use the same populations and window as the tables above.

Every percentage retains its denominator.

How disrupted are these arrivals?

23.9% of 1,698 movements over July 2025 to June 2026.

How often are they cancelled?

2.2% of 1,698 movements at short notice.

How late is late?

19.0–53.0 minutes; delayed denominator 368–939

Are services improving?

The monthly line records past changes; it is not a forecast or a causal comparison.

Which routes are compared?

The route table uses separately identified UK airport and final-point pairs, with small samples flagged.

Does this cover my flight?

Only published aggregate movements; the circumstances of any individual flight are unknown.

Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

How this was calculated

Source: CAA punctuality statistics · snapshot 17/08/2026 10:24 · method route-record-v2.1 · Versioned claims, formulas and entity mapping.

Integer bucket counts are recovered from rounding intervals over D=M+C+U with their sum constrained to M. Ambiguous counts remain ranges; failed reconciliation is quarantined.

Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Your trip has already gone wrong

The monthly line and events table show whether your month was typical or unusual in the published record.

Nothing here decides an individual case or what a passenger may be owed.

CAA: the official route to complain
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.