condition mean min max 4 h after light 1.59632 1.39015 1.80249 8 h after light 0.8307005000000001 0.800191 0.86121 12 h after light 1.1292425000000001 0.910245 1.34824 4 h after dark 1.7477533333333333 1.46812 1.9767 8 h after dark 1.9012366666666667 1.6807 2.1202 12 h after dark 1.5092933333333334 1.32688 1.62454