condition mean min max 4 h after light 5.94771 5.65013 6.24529 8 h after light 5.494455 5.20875 5.78016 12 h after light 5.198515 4.58077 5.81626 4 h after dark 8.16643 7.3078 9.02506 8 h after dark 6.93168 6.13011 7.73325 12 h after dark 7.6926749999999995 7.39083 7.99452