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Anemometer
14
Barometer
14
DATE/TIME
14
Hygrometer
IPY-1
Observation
14
Thermometer
14
Visual observation
14
Rain gauge
12
Cloud cover
10
Station pressure
10
Wind speed
10
Vapour tension
9
BARO
7
HYGRO
7
Humidity
7
International Polar Year 1881-1884
7
OBSE
7
Temperature
7
air
7
relative
7
Precipitation
6
Wind direction
6
Calculated from cloud direction description
4
Calculated from wind direction description
4
Cloud direction
4
Cloud direction description
4
Cloud type
4
Hydrometeor
4
Precipitation, daily total
4
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