condition mean min max 4 h after light 1431.1 1431.1 1431.1 8 h after light 1357.4 1236.0 1478.8 12 h after light 1054.3 961.6 1147.0 4 h after dark 1466.35 1153.7 1779.0 8 h after dark 1401.6 1229.0 1574.2 12 h after dark 1295.6 1255.5 1335.7