Bogo weather in February
In February, Bogo sees average daytime highs of 36°C and overnight lows near 20°C, with 0 mm of rain across 0 wet days and about 11.6 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.
Highs climb over the month, from about 34°C in the first days to 37°C by the end. The sky is clear or mostly clear about 58% of the time in February, and the air most often feels dry.
Daylight stretches from about 11 h 30 min at the start of February to 11 h 48 min by month's end. Set against the rest of the year, February is Bogo's 3rd-clearest and 1st-windiest month. For the whole year in context, see Bogo's year-round climate.
- Daytime high
- 36°
- 4th warmest
- Overnight low
- 20°
- 3rd coldest
- Rainfall
- 0 mm
- 0 wet days
- Daylight
- 11 h 36 min
- 6:27 AM – 6:06 PM
- Cloud cover
- 37%
- 3rd clearest
- Wind
- 12 km/h
- 1st windiest
- Solar energy
- 6.69 kWh/m²
- Travel score
- 2.9
- out of 10
Bogo is commune of Cameroon.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in February
Highs climb over the month, from about 34°C in the first days to 37°C by the end.
A typical February day in Bogo reaches about 36°C in the afternoon and slips back to 20°C overnight — a 16°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 40°C. Set against its neighbours, February runs about 3°C warmer than January and about 4°C cooler than March.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 34 | 34 | 34 | 34 | 34 | 34 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 36 | 36 | 36 | 36 | 36 | 36 | 37 | 37 | 37 | 37 | 37 | 37 | 37 |
| Avg low (°C) | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 22 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 34 | 18 |
| 2 | 34 | 18 |
| 3 | 34 | 18 |
| 4 | 34 | 18 |
| 5 | 34 | 18 |
| 6 | 34 | 18 |
| 7 | 35 | 19 |
| 8 | 35 | 19 |
| 9 | 35 | 19 |
| 10 | 35 | 19 |
| 11 | 35 | 19 |
| 12 | 35 | 19 |
| 13 | 35 | 19 |
| 14 | 35 | 19 |
| 15 | 35 | 19 |
| 16 | 36 | 20 |
| 17 | 36 | 20 |
| 18 | 36 | 20 |
| 19 | 36 | 20 |
| 20 | 36 | 20 |
| 21 | 36 | 20 |
| 22 | 37 | 21 |
| 23 | 37 | 21 |
| 24 | 37 | 21 |
| 25 | 37 | 21 |
| 26 | 37 | 21 |
| 27 | 37 | 21 |
| 28 | 37 | 22 |
How February really feels in Bogo
Once humidity and wind are folded in, February averages 28 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in February is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Bogo weather by month
How February compares with the rest of the year at a glance. February is the 4th-warmest and 10th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 32° / 17° | 0 | 0 | 11.4 | 4.9 |
| Feb | 36° / 20° | 0 | 0 | 11.6 | 2.9 |
| Mar | 39° / 23° | 0 | 0.1 | 11.9 | 0.6 |
| Apr | 40° / 27° | 8 | 2.3 | 12.2 | 0.1 |
| May | 38° / 27° | 33 | 7.9 | 12.5 | 1.1 |
| Jun | 35° / 25° | 65 | 12.2 | 12.6 | 2.5 |
| Jul | 32° / 24° | 137 | 20 | 12.6 | 3.2 |
| Aug | 30° / 23° | 221 | 24.2 | 12.4 | 3.2 |
| Sep | 32° / 23° | 111 | 16.8 | 12.1 | 3.5 |
| Oct | 34° / 23° | 23 | 4.9 | 11.8 | 3.1 |
| Nov | 35° / 20° | 0 | 0.1 | 11.5 | 3.3 |
| Dec | 33° / 17° | 0 | 0 | 11.4 | 4.8 |
Cloud cover in February
The sky is clear or mostly clear about 58% of the time in February.
Beyond those clear spells, partly cloudy skies cover about 13% of February, with mostly cloudy or overcast conditions the remaining 29%. Skies tend to cloud over as the month goes on.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 74 | 74 | 73 | 73 | 73 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 71 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 69 | 69 | 69 | 69 | 68 | 68 | 68 | 68 |
| Cloudier (%) | 26 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 32 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 74 | 26 |
| 2 | 74 | 26 |
| 3 | 73 | 27 |
| 4 | 73 | 27 |
| 5 | 73 | 27 |
| 6 | 72 | 28 |
| 7 | 72 | 28 |
| 8 | 72 | 28 |
| 9 | 72 | 28 |
| 10 | 72 | 28 |
| 11 | 72 | 28 |
| 12 | 72 | 28 |
| 13 | 71 | 29 |
| 14 | 70 | 30 |
| 15 | 70 | 30 |
| 16 | 70 | 30 |
| 17 | 70 | 30 |
| 18 | 70 | 30 |
| 19 | 70 | 30 |
| 20 | 70 | 30 |
| 21 | 69 | 31 |
| 22 | 69 | 31 |
| 23 | 69 | 31 |
| 24 | 69 | 31 |
| 25 | 68 | 32 |
| 26 | 68 | 32 |
| 27 | 68 | 32 |
| 28 | 68 | 32 |
Chance of precipitation in February
Bogo gets around 0 mm of rain over 0 wet days in February. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 0% and peaks near 0% on the wettest days.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Rain chance (%) | |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 0 |
| 18 | 0 |
| 19 | 0 |
| 20 | 0 |
| 21 | 0 |
| 22 | 0 |
| 23 | 0 |
| 24 | 0 |
| 25 | 0 |
| 26 | 0 |
| 27 | 0 |
| 28 | 0 |
Humidity in February
Most of February feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, February lands in the dry band about 100% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
Wind in February
Winds average 12 km/h in February, the windiest month of the year.
Across February, daily wind ranges from about 11 km/h on the calmest days to 12 km/h 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 11 | calm |
| 2 | 12 | calm |
| 3 | 12 | calm |
| 4 | 12 | calm |
| 5 | 12 | calm |
| 6 | 12 | calm |
| 7 | 12 | calm |
| 8 | 12 | calm |
| 9 | 12 | calm |
| 10 | 12 | calm |
| 11 | 12 | calm |
| 12 | 12 | calm |
| 13 | 12 | calm |
| 14 | 12 | calm |
| 15 | 12 | calm |
| 16 | 12 | calm |
| 17 | 12 | calm |
| 18 | 12 | calm |
| 19 | 12 | calm |
| 20 | 12 | calm |
| 21 | 12 | calm |
| 22 | 12 | calm |
| 23 | 12 | calm |
| 24 | 12 | calm |
| 25 | 12 | calm |
| 26 | 12 | calm |
| 27 | 12 | calm |
| 28 | 12 | calm |
Sunrise & sunset in February
Daylight runs from about 11 h 30 min at the start of February to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 18 minutes over February. Sunrise moves from 6:29 AM to 6:22 AM, and sunset from 6:01 PM to 6:08 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.5 | 11.5 | 11.5 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 |
| Sunrise (AM) | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:27 | 6:27 | 6:27 | 6:26 | 6:26 | 6:26 | 6:26 | 6:25 | 6:25 | 6:24 | 6:24 | 6:24 | 6:23 | 6:23 | 6:22 | 6:22 |
| Sunset (PM) | 6:01 | 6:01 | 6:02 | 6:02 | 6:03 | 6:03 | 6:03 | 6:04 | 6:04 | 6:04 | 6:04 | 6:05 | 6:05 | 6:05 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:08 | 6:08 | 6:08 | 6:08 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.5 | 6:29 | 6:01 |
| 2 | 11.5 | 6:29 | 6:01 |
| 3 | 11.5 | 6:29 | 6:02 |
| 4 | 11.6 | 6:29 | 6:02 |
| 5 | 11.6 | 6:29 | 6:03 |
| 6 | 11.6 | 6:29 | 6:03 |
| 7 | 11.6 | 6:28 | 6:03 |
| 8 | 11.6 | 6:28 | 6:04 |
| 9 | 11.6 | 6:28 | 6:04 |
| 10 | 11.6 | 6:28 | 6:04 |
| 11 | 11.6 | 6:28 | 6:04 |
| 12 | 11.6 | 6:28 | 6:05 |
| 13 | 11.6 | 6:27 | 6:05 |
| 14 | 11.6 | 6:27 | 6:05 |
| 15 | 11.6 | 6:27 | 6:06 |
| 16 | 11.7 | 6:26 | 6:06 |
| 17 | 11.7 | 6:26 | 6:06 |
| 18 | 11.7 | 6:26 | 6:06 |
| 19 | 11.7 | 6:26 | 6:06 |
| 20 | 11.7 | 6:25 | 6:07 |
| 21 | 11.7 | 6:25 | 6:07 |
| 22 | 11.7 | 6:24 | 6:07 |
| 23 | 11.7 | 6:24 | 6:07 |
| 24 | 11.7 | 6:24 | 6:07 |
| 25 | 11.7 | 6:23 | 6:08 |
| 26 | 11.7 | 6:23 | 6:08 |
| 27 | 11.8 | 6:22 | 6:08 |
| 28 | 11.8 | 6:22 | 6:08 |
Solar energy in February
Average shortwave solar energy reaching the ground each day in February, about 6.69 kWh/m².
For context, solar energy here swings from a low near 5.11 kWh/m² to a high of 7.14 kWh/m² in March across the year — February's 6.69 kWh/m² sits near the top of that range.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.8 | 6.8 | 6.8 | 6.8 | 6.8 | 6.8 | 6.8 | 6.8 | 6.9 | 6.9 | 6.9 | 6.9 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.5 | Intense |
| 2 | 6.5 | Intense |
| 3 | 6.5 | Intense |
| 4 | 6.5 | Intense |
| 5 | 6.5 | Intense |
| 6 | 6.5 | Intense |
| 7 | 6.6 | Intense |
| 8 | 6.6 | Intense |
| 9 | 6.6 | Intense |
| 10 | 6.6 | Intense |
| 11 | 6.6 | Intense |
| 12 | 6.7 | Intense |
| 13 | 6.7 | Intense |
| 14 | 6.7 | Intense |
| 15 | 6.7 | Intense |
| 16 | 6.7 | Intense |
| 17 | 6.8 | Intense |
| 18 | 6.8 | Intense |
| 19 | 6.8 | Intense |
| 20 | 6.8 | Intense |
| 21 | 6.8 | Intense |
| 22 | 6.8 | Intense |
| 23 | 6.8 | Intense |
| 24 | 6.8 | Intense |
| 25 | 6.9 | Intense |
| 26 | 6.9 | Intense |
| 27 | 6.9 | Intense |
| 28 | 6.9 | Intense |
Hazard calendar for Bogo
In February, Bogo sits inside its dust season. The full year is below, with each hazard's peak months called out.
Bogo's monsoon runs July–September, when most of the year's rain falls.
Bogo sees seasonal dust haze (February–June), heaviest in March.
Is February a good time to visit Bogo?
Our two travel scores rate February for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
February is a weaker month for outdoor sightseeing in Bogo. The water and warmth also suit a beach or pool day.
What to pack for Bogo in February
From February's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In February, Bogo sees daytime highs around 36°C and nights near 20°C. Pack light clothes and sun protection.
UV index in Bogo in February
Clear-sky midday UV in February peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Bogo peaks around March 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 8 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 10 | 11 | 13 | 11 | 9 | 11 | 12 | 13 | 11 | 11 | 9 | 8 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Extreme |
| Feb | 11 | Extreme |
| Mar | 13 | Extreme |
| Apr | 11 | Extreme |
| May | 9 | Very high |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 11 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 8 | Very high |
Air quality in Bogo in February
Average fine-particle pollution (PM2.5) through the year — so you can see where February falls, not just the annual average.
Air quality in Bogo is worst in March — around 89 µg/m³ PM2.5 (unhealthy), about 4.4× the cleanest month (July, 20 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) | 77 | 87 | 89 | 62 | 34 | 27 | 20 | 22 | 27 | 40 | 45 | 68 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Moderate | Moderate | Moderate | Moderate | Moderate | Poor | Poor | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 77 | Unhealthy |
| Feb | 87 | Unhealthy |
| Mar | 89 | Unhealthy |
| Apr | 62 | Unhealthy |
| May | 34 | Moderate |
| Jun | 27 | Moderate |
| Jul | 20 | Moderate |
| Aug | 22 | Moderate |
| Sep | 27 | Moderate |
| Oct | 40 | Poor |
| Nov | 45 | Poor |
| Dec | 68 | Unhealthy |
Where is Bogo?
Bogo sits at 10.7°N, 14.6°E, 343 m above sea level, in Cameroon. The nearest listed city is Maroua, 36 km away.
Topography around Bogo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bogo.
Within 3 km, the terrain around Bogo has only modest variations in elevation — a maximum elevation change of 19 m around an average of 339 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 275 m; within 80 km, large variations in elevation — a maximum elevation change of 776 m.
The land around Bogo is covered by grassland (53%) and cropland (31%) within 3 km, grassland (44%) and cropland (41%) within 16 km, and grassland (42%) and cropland (35%) within 80 km.
Cameroon travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E
- 220 V · 50 Hz
- Prices
- ≈ 34% of US
- price level, 2025
- GDP per capita
- $1,972
- 2025
- Happiness
- 5.1 / 10
- World Happiness, 2025
- Homicide rate
- 6.8
- per 100k, 2022
- Road deaths
- 30.2
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Very low
- EF EPI 445
- 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 Bogo (10.7336°, 14.6093°, elevation 343 m), 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).