condition mean min max 2 h after light 6.959495 0.0 18.9359 6 h after light 6.529368333333333 0.0 25.0051 10 h after light 5.17354 0.0 12.7643 14 h after light 5.306851666666667 0.0 24.2875 18 h after light 4.939651666666666 0.0 17.8115 2 h after dark 7.7253050000000005 0.0 24.3499