condition mean min max 2 h after light 1.344276 0.977536 1.6803 6 h after light 1.2304108333333332 0.544945 1.65816 10 h after light 0.8715051666666667 0.142051 1.76724 14 h after light 0.8909841666666667 0.504942 1.32412 18 h after light 1.2581525 0.955345 1.7346 2 h after dark 1.6106845 0.774977 2.28222