Sterling weather in March

In March, Sterling sees average daytime highs of 54°F and overnight lows near 36°F, with 3.8 in of precipitation across 10 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 50°F in the first days to 59°F by the end. The sky is clear or mostly clear about 29% of the time in March, and the air most often feels dry.

Daylight stretches from about 11 hours at the start of March to 12 h 18 min by month's end. Set against the rest of the year, March is Sterling's 10th-clearest and 1st-windiest month. For the whole year in context, see Sterling's year-round climate.

Daytime high: 54°; 9th warmest
Overnight low: 36°; 4th coldest
Precipitation: 3.8 in; 10 wet days
Daylight: 11 h 42 min; 6:29 AM – 6:10 PM
Cloud cover: 61%; 10th clearest
Wind: 7 mph; 1st windiest
Solar energy: 4.14 kWh/m²
Travel score: 3.3; out of 10

Sterling is City / Census Designated Place.

Density: 1,950/km²; people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← February Sterling year-round climate April →Best places to visit in March

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 50°F in the first days to 59°F by the end.

A typical March day in Sterling reaches about 54°F in the afternoon and slips back to 36°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 41°F and 69°F. Set against its neighbours, March runs about 9°F warmer than February and about 12°F cooler than April.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°F)	49	50	50	50	51	51	51	52	52	52	53	53	53	53	54	54	54	54	55	55	55	56	56	56	57	57	58	58	59	59	60
Avg low (°F)	32	32	33	33	33	33	33	34	34	34	34	35	35	35	35	36	36	36	37	37	37	38	38	38	39	39	40	40	40	41	41

	Avg high (°F)	Avg low (°F)
1	49	32
2	50	32
3	50	33
4	50	33
5	51	33
6	51	33
7	51	33
8	52	34
9	52	34
10	52	34
11	53	34
12	53	35
13	53	35
14	53	35
15	54	35
16	54	36
17	54	36
18	54	36
19	55	37
20	55	37
21	55	37
22	56	38
23	56	38
24	56	38
25	57	39
26	57	39
27	58	40
28	58	40
29	59	40
30	59	41
31	60	41

How March really feels in Sterling

Once humidity and wind are folded in, March averages 0 days that feel above 90°F and 21 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F

heat index over the day's high

Days feeling ≤ 32°F

wind chill below the day's low

The story in March is cold — wind chill drags the overnight "feels like" below the raw low.

Sterling weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 4th-wettest month here — the current month is highlighted below.

Month	High / Low (°F)	Rainfall (inches)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	42° / 28°	3.0	8.6	3	9.6	0.3
Feb	45° / 29°	2.8	8.1	3	10.5	1.1
Mar	54° / 36°	3.8	10	2	11.7	3.3
Apr	66° / 46°	3.4	10.3	0.1	13	5.8
May	74° / 56°	3.8	11.3	0	14.1	6.5
Jun	83° / 65°	3.4	11.2	0	14.7	5.5
Jul	88° / 69°	3.9	11.8	0	14.5	4.4
Aug	85° / 68°	3.3	10.4	0	13.5	5.1
Sep	78° / 60°	4.4	9.5	0	12.3	6.7
Oct	67° / 49°	3.4	7.8	0	11	6.5
Nov	55° / 38°	3.0	7.6	0.3	9.9	3.9
Dec	46° / 32°	3.5	9.1	2.1	9.3	1.3

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 16% of March, with mostly cloudy or overcast conditions the remaining 55%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	46	46	47	47	47	48	48	48	48	47	48	48	47	46	46	45	44	43	43	43	41	41	41	41	41	41	41	41	41	42	42
Cloudier (%)	54	54	53	53	53	52	52	52	52	53	52	52	53	54	54	55	56	57	57	57	59	59	59	59	59	59	59	59	59	58	58

	Clearer (%)	Cloudier (%)
1	46	54
2	46	54
3	47	53
4	47	53
5	47	53
6	48	52
7	48	52
8	48	52
9	48	52
10	47	53
11	48	52
12	48	52
13	47	53
14	46	54
15	46	54
16	45	55
17	44	56
18	43	57
19	43	57
20	43	57
21	41	59
22	41	59
23	41	59
24	41	59
25	41	59
26	41	59
27	41	59
28	41	59
29	41	59
30	42	58
31	42	58

Chance of precipitation in March

Any precipitationSnow

Sterling gets around 3.8 in of rain and snow over 10 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 32% and peaks near 33% on the wettest days, and about 2 days bring snow.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	32	32	32	32	32	31	31	31	31	31	31	31	31	31	31	31	31	32	32	32	32	32	33	33	33	33	33	33	33	33	33
Snow chance (%)	9	9	9	9	9	9	8	8	8	8	8	7	7	7	6	6	6	6	5	5	5	5	4	4	4	3	3	3	2	2	2

	Rain chance (%)	Snow chance (%)
1	32	9
2	32	9
3	32	9
4	32	9
5	32	9
6	31	9
7	31	8
8	31	8
9	31	8
10	31	8
11	31	8
12	31	7
13	31	7
14	31	7
15	31	6
16	31	6
17	31	6
18	32	6
19	32	5
20	32	5
21	32	5
22	32	5
23	33	4
24	33	4
25	33	4
26	33	3
27	33	3
28	33	3
29	33	2
30	33	2
31	33	2

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

Most of March feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, March lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	99	99	99	99	99	99	99	99	98	98	98	98	98	98	98	98	97	97	97	97
Comfortable (%)	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	1	2	2	2	2	2	2	2	2	3	3	3	3

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	98	2
21	98	2
22	98	2
23	98	2
24	98	2
25	98	2
26	98	2
27	98	2
28	97	3
29	97	3
30	97	3
31	97	3

Wind in March

Winds average 7 mph in March, the windiest month of the year.

Across March, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (mph)	8	8	8	8	8	8	8	8	8	8	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (mph)	Feels
1	8	light breeze
2	8	light breeze
3	8	light breeze
4	8	light breeze
5	8	light breeze
6	8	light breeze
7	8	light breeze
8	8	light breeze
9	8	light breeze
10	8	light breeze
11	7	light breeze
12	7	light breeze
13	7	calm
14	7	calm
15	7	calm
16	7	calm
17	7	calm
18	7	calm
19	7	calm
20	7	calm
21	7	calm
22	7	calm
23	7	calm
24	7	calm
25	7	calm
26	7	calm
27	7	calm
28	7	calm
29	7	calm
30	7	calm
31	7	calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 hours at the start of March to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 78 minutes over March. Sunrise moves from 6:52 AM to 6:05 AM, and sunset from 5:54 PM to 6:25 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	11.0	11.1	11.1	11.2	11.2	11.3	11.3	11.3	11.4	11.4	11.5	11.5	11.6	11.6	11.6	11.7	11.7	11.8	11.8	11.9	11.9	11.9	12.0	12.0	12.1	12.1	12.2	12.2	12.3	12.3	12.3
Sunrise (AM)	6:52	6:50	6:49	6:47	6:46	6:44	6:43	6:41	6:40	6:38	6:37	6:35	6:34	6:32	6:30	6:29	6:27	6:26	6:24	6:22	6:21	6:19	6:18	6:16	6:14	6:13	6:11	6:09	6:08	6:06	6:05
Sunset (PM)	5:54	5:55	5:56	5:57	5:59	6:00	6:01	6:02	6:03	6:04	6:05	6:06	6:07	6:08	6:09	6:10	6:11	6:12	6:13	6:14	6:15	6:16	6:17	6:18	6:19	6:20	6:21	6:22	6:23	6:24	6:25

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.0	6:52	5:54
2	11.1	6:50	5:55
3	11.1	6:49	5:56
4	11.2	6:47	5:57
5	11.2	6:46	5:59
6	11.3	6:44	6:00
7	11.3	6:43	6:01
8	11.3	6:41	6:02
9	11.4	6:40	6:03
10	11.4	6:38	6:04
11	11.5	6:37	6:05
12	11.5	6:35	6:06
13	11.6	6:34	6:07
14	11.6	6:32	6:08
15	11.6	6:30	6:09
16	11.7	6:29	6:10
17	11.7	6:27	6:11
18	11.8	6:26	6:12
19	11.8	6:24	6:13
20	11.9	6:22	6:14
21	11.9	6:21	6:15
22	11.9	6:19	6:16
23	12.0	6:18	6:17
24	12.0	6:16	6:18
25	12.1	6:14	6:19
26	12.1	6:13	6:20
27	12.2	6:11	6:21
28	12.2	6:09	6:22
29	12.3	6:08	6:23
30	12.3	6:06	6:24
31	12.3	6:05	6:25

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.14 kWh/m².

For context, solar energy here swings from a low near 1.95 kWh/m² to a high of 6.15 kWh/m² in June across the year — March's 4.14 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	3.6	3.7	3.7	3.8	3.8	3.9	3.9	4.0	4.0	4.0	4.0	4.1	4.1	4.1	4.1	4.2	4.2	4.2	4.2	4.3	4.3	4.3	4.3	4.4	4.4	4.4	4.5	4.5	4.6	4.6	4.7
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	3.6	Moderate
2	3.7	Moderate
3	3.7	Moderate
4	3.8	Moderate
5	3.8	Moderate
6	3.9	Moderate
7	3.9	Moderate
8	4.0	Moderate
9	4.0	Moderate
10	4.0	Bright
11	4.0	Bright
12	4.1	Bright
13	4.1	Bright
14	4.1	Bright
15	4.1	Bright
16	4.2	Bright
17	4.2	Bright
18	4.2	Bright
19	4.2	Bright
20	4.3	Bright
21	4.3	Bright
22	4.3	Bright
23	4.3	Bright
24	4.4	Bright
25	4.4	Bright
26	4.4	Bright
27	4.5	Bright
28	4.5	Bright
29	4.6	Bright
30	4.6	Bright
31	4.7	Bright

Planning a trip in March

Is March a good time to visit Sterling?

Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.3

Sightseeing

9th-best month of the year

0.1

Beach & pool

9th-best month of the year

March is a weaker month for outdoor sightseeing in Sterling.

What to pack for Sterling in March

From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In March, Sterling sees daytime highs around 54°F and nights near 36°F. Worth packing: a warm layer and rain gear. About 10 days see rain.

a warm layerrain gear

UV index in Sterling in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sterling peaks around July 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	2	3	5	6	8	9	9	7	6	4	3	2
Level	Low	Moderate	High	High	Very high	Very high	Very high	High	High	Moderate	Moderate	Low

	UV index (midday)	Level
Jan	2	Low
Feb	3	Moderate
Mar	5	High
Apr	6	High
May	8	Very high
Jun	9	Very high
Jul	9	Very high
Aug	7	High
Sep	6	High
Oct	4	Moderate
Nov	3	Moderate
Dec	2	Low

Air quality in Sterling in March

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.

Air quality in Sterling is worst in July — around 17 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (November, 9 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	11	12	13	13	15	16	17	15	12	9	9	10
Level	Good	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	11	Good
Feb	12	Moderate
Mar	13	Moderate
Apr	13	Moderate
May	15	Moderate
Jun	16	Moderate
Jul	17	Moderate
Aug	15	Moderate
Sep	12	Moderate
Oct	9	Good
Nov	9	Good
Dec	10	Good

Location & terrain

Where is Sterling?

Sterling sits at 39.0°N, 77.4°W, 292 ft above sea level, in United States. The nearest listed city is Herndon, 3.1 mi away.

Topography around Sterling

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Sterling.

Within 2 miles, the terrain around Sterling has only modest variations in elevation — a maximum elevation change of 266 ft around an average of 299 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 548 ft; within 50 miles, large variations in elevation — a maximum elevation change of 3,615 ft.

The land around Sterling is covered by artificial surfaces (42%) and trees (40%) within 2 miles, trees (62%) within 10 miles, and trees (65%) within 50 miles.

2 miles

266 ft

artificial surfaces 42%

10 miles

548 ft

trees 62%

50 miles

3,615 ft

trees 65%

treesgrasslandcroplandartificial surfacesbare terrainwater

← February Sterling year-round climate April →Best places to visit in March

March weather nearby: Herndon 3.1 mi · Ashburn 4.3 mi · Reston 5.6 mi · Oak Hill 5.6 mi · South Riding 7.5 mi · Great Falls 7.5 mi · Chantilly 7.5 mi · Wolf Trap 8.7 mi

United States travel facts

Power plugs: Type A / B; 120 V · 60 Hz
Prices: ≈ 100% of US; price level, 2025
GDP per capita: $90,027; 2025
Happiness: 6.8 / 10; World Happiness, 2025
Safe drinking water: 98%; of population, 2024
Homicide rate: 5.8; per 100k, 2023
Road deaths: 12.7; per 100k/yr, 2019
Income group: High; World Bank
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Sterling (39.0062°, -77.4286°, elevation 292 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°F)	Avg low (°F)
1	49	32
2	50	32
3	50	33
4	50	33
5	51	33
6	51	33
7	51	33
8	52	34
9	52	34
10	52	34
11	53	34
12	53	35
13	53	35
14	53	35
15	54	35
16	54	36
17	54	36
18	54	36
19	55	37
20	55	37
21	55	37
22	56	38
23	56	38
24	56	38
25	57	39
26	57	39
27	58	40
28	58	40
29	59	40
30	59	41
31	60	41

	Clearer (%)	Cloudier (%)
1	46	54
2	46	54
3	47	53
4	47	53
5	47	53
6	48	52
7	48	52
8	48	52
9	48	52
10	47	53
11	48	52
12	48	52
13	47	53
14	46	54
15	46	54
16	45	55
17	44	56
18	43	57
19	43	57
20	43	57
21	41	59
22	41	59
23	41	59
24	41	59
25	41	59
26	41	59
27	41	59
28	41	59
29	41	59
30	42	58
31	42	58

	Rain chance (%)	Snow chance (%)
1	32	9
2	32	9
3	32	9
4	32	9
5	32	9
6	31	9
7	31	8
8	31	8
9	31	8
10	31	8
11	31	8
12	31	7
13	31	7
14	31	7
15	31	6
16	31	6
17	31	6
18	32	6
19	32	5
20	32	5
21	32	5
22	32	5
23	33	4
24	33	4
25	33	4
26	33	3
27	33	3
28	33	3
29	33	2
30	33	2
31	33	2

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	98	2
21	98	2
22	98	2
23	98	2
24	98	2
25	98	2
26	98	2
27	98	2
28	97	3
29	97	3
30	97	3
31	97	3

	Avg high (°F)	Avg low (°F)
1	49	32
2	50	32
3	50	33
4	50	33
5	51	33
6	51	33
7	51	33
8	52	34
9	52	34
10	52	34
11	53	34
12	53	35
13	53	35
14	53	35
15	54	35
16	54	36
17	54	36
18	54	36
19	55	37
20	55	37
21	55	37
22	56	38
23	56	38
24	56	38
25	57	39
26	57	39
27	58	40
28	58	40
29	59	40
30	59	41
31	60	41

	Clearer (%)	Cloudier (%)
1	46	54
2	46	54
3	47	53
4	47	53
5	47	53
6	48	52
7	48	52
8	48	52
9	48	52
10	47	53
11	48	52
12	48	52
13	47	53
14	46	54
15	46	54
16	45	55
17	44	56
18	43	57
19	43	57
20	43	57
21	41	59
22	41	59
23	41	59
24	41	59
25	41	59
26	41	59
27	41	59
28	41	59
29	41	59
30	42	58
31	42	58

	Rain chance (%)	Snow chance (%)
1	32	9
2	32	9
3	32	9
4	32	9
5	32	9
6	31	9
7	31	8
8	31	8
9	31	8
10	31	8
11	31	8
12	31	7
13	31	7
14	31	7
15	31	6
16	31	6
17	31	6
18	32	6
19	32	5
20	32	5
21	32	5
22	32	5
23	33	4
24	33	4
25	33	4
26	33	3
27	33	3
28	33	3
29	33	2
30	33	2
31	33	2

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	98	2
21	98	2
22	98	2
23	98	2
24	98	2
25	98	2
26	98	2
27	98	2
28	97	3
29	97	3
30	97	3
31	97	3

	Avg high (°F)	Avg low (°F)
1	49	32
2	50	32
3	50	33
4	50	33
5	51	33
6	51	33
7	51	33
8	52	34
9	52	34
10	52	34
11	53	34
12	53	35
13	53	35
14	53	35
15	54	35
16	54	36
17	54	36
18	54	36
19	55	37
20	55	37
21	55	37
22	56	38
23	56	38
24	56	38
25	57	39
26	57	39
27	58	40
28	58	40
29	59	40
30	59	41
31	60	41

	Clearer (%)	Cloudier (%)
1	46	54
2	46	54
3	47	53
4	47	53
5	47	53
6	48	52
7	48	52
8	48	52
9	48	52
10	47	53
11	48	52
12	48	52
13	47	53
14	46	54
15	46	54
16	45	55
17	44	56
18	43	57
19	43	57
20	43	57
21	41	59
22	41	59
23	41	59
24	41	59
25	41	59
26	41	59
27	41	59
28	41	59
29	41	59
30	42	58
31	42	58

	Rain chance (%)	Snow chance (%)
1	32	9
2	32	9
3	32	9
4	32	9
5	32	9
6	31	9
7	31	8
8	31	8
9	31	8
10	31	8
11	31	8
12	31	7
13	31	7
14	31	7
15	31	6
16	31	6
17	31	6
18	32	6
19	32	5
20	32	5
21	32	5
22	32	5
23	33	4
24	33	4
25	33	4
26	33	3
27	33	3
28	33	3
29	33	2
30	33	2
31	33	2

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	98	2
21	98	2
22	98	2
23	98	2
24	98	2
25	98	2
26	98	2
27	98	2
28	97	3
29	97	3
30	97	3
31	97	3