condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.04294295 0.0 0.0858859 4 h after dark 0.0 0.0 0.0 8 h after dark 0.125695 0.0 0.25139 12 h after dark 0.0 0.0 0.0