10 0 Reserved
21 1 Past day
32 2 Present day
43 3 Mean from 24 Measurements from day before past day 23:50 UTC until past day 22:50 UTC
54 4 Mean from 3 Measurements at 06:50, 13:50 and 20:50 UTC from past day
65 5 From past day 06:30 UTC until 06:30 UTC (today)
76 6 From past day 21 UTC until 21 UTC (today)
87 7 Last 10 hours
915 15 Missing value
10