Seeing for 38.44°N 77.13°W

Fri 2018-01-19 to Sat 2018-01-20
Ground Sky
Hour (EST) Temp rel. hum. Clouds
Best values are marked
arc sec.
13 8°C 36% 0 1.70
14 9°C 33% 0 1.84
15 10°C 31% 0 1.93
16 9°C 32% 0 1.98
17 8°C 34% 0 1.98
18 6°C 37% 0 1.99
19 4°C 42% 0 1.94
20 3°C 47% 0 1.88
21 3°C 50% 0 1.84
22 2°C 49% 0 1.82
23 1°C 46% 0 1.81
0 1°C 43% 0 1.80
1 0°C 40% 0 1.77
2 0°C 41% 0 1.72
3 0°C 44% 0 1.68
4 -1°C 49% 0 1.64
5 -1°C 56% 0 1.62
6 -2°C 60% 0 1.60
7 -1°C 61% 1 1.57
8 0°C 58% 0 1.52
9 3°C 52% 0 1.46
10 5°C 58% 0 1.40
11 8°C 49% 0 1.35
12 10°C 42% 0 1.29