condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.285873 0.246079 0.343194 9 h after light 0.6796853333333334 0.152916 1.10453 12 h after light 1.11879875 0.677255 1.48626 3 h after dark 1.8728833333333335 1.42882 2.31171 6 h after dark 1.4930663333333334 0.967549 2.01009 9 h after dark 0.8833746666666666 0.401094 1.22907 12 h after dark 0.215898 0.0 0.431796