condition mean min max 0 h after light 47.7847 44.8406 50.7288 4 h after light 1996.275 1325.71 2666.84 8 h after light 1905.145 1883.25 1927.04 4 h after dark 164.4065 109.023 219.79 8 h after dark 108.2143 96.1026 120.326 12 h after dark 79.2248 60.7928 97.6568