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IPY-1
18
Observation
18
DATE/TIME
16
Anemometer
12
Barometer
12
Hygrometer
12
Rain gauge
12
Thermometer
12
Visual observation
12
International Polar Year 1881-1884
9
OBSE
9
Russia
9
Ssagastyr
9
Cloud cover
8
Station pressure
8
Temperature
8
Vapour tension
8
Wind speed
8
BARO
6
HYGRO
6
Humidity
6
Precipitation
6
air
6
relative
6
Precipitation, daily total
5
daily total
5
Cloud type
4
Hydrometeor
4
Wind direction
4
Wind direction description
4
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