condition mean min max 0 h after light 0.981181 0.766632 1.19573 4 h after light 0.694818 0.682282 0.707354 8 h after light 2.978265 2.79186 3.16467 4 h after dark 2.306755 2.06687 2.54664 8 h after dark 1.7261099999999998 1.61509 1.83713 12 h after dark 0.7330734999999999 0.654143 0.812004