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 0.048899 0.0 0.146697 8 h after dark 0.0 0.0 0.0 12 h after dark 0.09645233333333332 0.0 0.289357