condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0908078 0.089314 0.0923016 8 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0