condition mean min max 4 h after light 6.163959999999999 6.0239 6.385269999999999 8 h after light 5.593876666666667 5.42299 5.82512 12 h after light 6.36678 6.1275 6.5454099999999995 4 h after dark 5.936723333333333 5.80789 6.09911 8 h after dark 6.140743333333333 5.98367 6.29239 12 h after dark 5.928806666666667 5.85542 6.07525