condition mean min max 4 h after light 1.4402400000000002 1.01418 1.8663 8 h after light 1.5364149999999999 1.39763 1.6752 12 h after light 1.8954499999999999 1.87302 1.91788 4 h after dark 1.1560013333333334 0.747178 1.83424 8 h after dark 1.69271 1.27677 2.25023 12 h after dark 1.225631 0.856883 1.41707