condition mean min max 2 h after light 1.438513 0.916958 2.07579 6 h after light 1.3325945 0.843417 1.83045 10 h after light 0.9825343333333333 0.464361 1.51007 14 h after light 0.9267383333333333 0.449916 1.39741 18 h after light 1.6649903333333333 0.941702 3.00389 2 h after dark 0.8998686666666667 0.67985 1.02698