condition mean min max 0 h after light 1.274775 1.0767 1.47285 4 h after light 1.695585 1.68764 1.70353 8 h after light 6.7495899999999995 6.68596 6.81322 4 h after dark 4.269045 3.88574 4.65235 8 h after dark 2.498095 2.05583 2.94036 12 h after dark 1.821685 1.23235 2.41102