condition mean min max 4 h after light 7.68746 7.68398 7.69094 8 h after light 5.5354399999999995 5.37497 5.69591 12 h after light 5.133115 5.07207 5.19416 4 h after dark 5.663695000000001 5.44793 5.87946 8 h after dark 9.883955 9.82646 9.94145 12 h after dark 7.902545 7.49149 8.3136