condition mean min max 4 h after light 1.213274 0.875268 1.55128 8 h after light 1.996175 1.84832 2.14403 12 h after light 1.3163 1.15779 1.47481 4 h after dark 2.013045 1.92151 2.10458 8 h after dark 1.456385 1.3447 1.56807 12 h after dark 1.78064 1.37577 2.18551