0 0 DRIFT SNOW ENDED BEFORE THE HOUR OF OBSERVATION
1 1 INTENSITY DIMINISHING
2 2 NO CHANGE
3 3 INTENSITY INCREASING
4 4 CONTINUES, APART FROM INTERRUPTION LASTING LESS THAN 30 MINU TES
5 5 GENERAL DRIFT SNOW HAS BECOME DRIFT SNOW NEAR THE GROUND
6 6 DRIFT SNOW NEAR THE GROUND HAS BECOME GENERAL DRIFT SNOW
7 7 DRIFT SNOW HAS STARTED AGAIN AFTER AN INTERRUPTION OF MORE T HAN 30 MINUTES
15 15 MISSING VALUE
