condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.02701925 0.0 0.0571956 3 h after dark 0.0 0.0 0.0 6 h after dark 0.020959133333333334 0.0 0.0628774 9 h after dark 0.08096043333333333 0.0463596 0.114943 12 h after dark 0.0 0.0 0.0