condition mean min max 2 h after light 1.6960133333333334 0.55323 3.1739 6 h after light 2.1544533333333336 1.00638 3.87681 10 h after light 1.3164358333333332 0.427869 2.23292 14 h after light 2.0550308333333334 0.788425 5.05125 18 h after light 2.4070650000000002 1.1564 4.59198 2 h after dark 0.8887425 0.47427 1.95596