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 0.738765 0.0 1.47753 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0