condition mean min max 4 h after light 854.2 854.2 854.2 8 h after light 905.7 799.5 1011.9 12 h after light 921.1500000000001 824.1 1018.2 4 h after dark 1223.9 1044.4 1403.4 8 h after dark 1419.9 1287.0 1552.8 12 h after dark 1392.8000000000002 1379.2 1406.4