condition mean min max 4 h after light 5.215412333333333 3.344103 7.341645 8 h after light 12.674064333333334 9.554043 17.43962 12 h after light 10.172293 7.096072 14.16934 16 h after light 8.829521666666666 8.472023 9.434498 4 h after dark 19.709442666666668 4.798456 44.76808 8 h after dark 7.445443 5.4648639999999995 9.322583