condition mean min max 4 h after light 2.24759 1.95239 2.54279 8 h after light 2.618355 2.379 2.85771 12 h after light 4.8108 4.52947 5.09213 4 h after dark 10.082175 9.53485 10.6295 8 h after dark 6.954525 6.73057 7.17848 12 h after dark 4.80247 4.62415 4.98079