condition mean min max 3 h after light 0.5518308333333334 0.234213 0.957426 7 h after light 0.7468171666666666 0.13712 1.37777 11 h after light 0.8717998333333333 0.509249 1.37013 2 h after dark 0.913041 0.494566 1.43037 6 h after dark 0.68549575 0.360543 1.05534 10 h after dark 0.504239 0.301575 0.828257