condition mean min max 0 h after light 0.109098 0.0 0.218196 2 h after light 0.0 0.0 0.0 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 2 h after dark 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.1099245 0.0 0.219849 12 h after dark 0.0 0.0 0.0