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DATE/TIME
IPY-1
13
Observation
13
Thermometer
11
Canada
9
Fort_Rae
9
International Polar Year 1881-1884
9
OBSE
9
Temperature
7
Anemometer
6
Barometer
6
Hygrometer
6
Rain gauge
6
Visual observation
6
Cloud cover
4
Station pressure
4
Vapour tension
4
Wind speed
4
BARO
3
HYGRO
3
Humidity
3
Precipitation
3
air
3
relative
3
technical
3
Calculated from cloud direction description
2
Calculated from wind direction description
2
Cloud direction
2
Cloud direction description
2
Cloud type
2
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