condition mean min max 4 h after light 1.58321 1.13452 1.93992 8 h after light 0.7643586666666666 0.157324 1.32233 12 h after light 0.868717 0.333145 1.42224 4 h after dark 2.4937 1.93074 3.05956 8 h after dark 2.57382 1.63099 3.77444 12 h after dark 3.2951166666666665 1.44303 4.24372