condition mean min max 4 h after light 10.181239999999999 9.90961 10.328439999999999 8 h after light 9.207853333333333 8.71941 9.502089999999999 12 h after light 9.497053333333334 9.27633 9.60914 4 h after dark 8.880946666666667 8.546489999999999 9.07944 8 h after dark 9.28701 8.88218 9.555589999999999 12 h after dark 9.93709 9.78027 10.12996