condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.006622126666666667 0.0 0.0143707 12 h after dark 0.00090122 0.0 0.00270366