condition mean min max 0 h after light 4.44049 3.985 4.89598 4 h after light 6.0965 5.37456 6.81844 8 h after light 6.7118649999999995 6.50568 6.91805 4 h after dark 5.993905 5.64913 6.33868 8 h after dark 6.17248 6.07222 6.27274 12 h after dark 4.94181 4.62748 5.25614