condition mean min max 4 h after light 1273.1 1273.1 1273.1 8 h after light 1436.25 1094.5 1778.0 12 h after light 1548.0 1357.0 1739.0 4 h after dark 1569.05 1403.0 1735.1 8 h after dark 1298.6 1092.9 1504.3 12 h after dark 936.75 918.5 955.0