condition mean min max 4 h after light 7.82632 7.70252 8.03577 8 h after light 7.798606666666666 7.603269999999999 7.95856 12 h after light 7.8580966666666665 7.7259899999999995 8.0322 4 h after dark 8.098936666666667 7.9082300000000005 8.310960000000001 8 h after dark 8.07756 7.924810000000001 8.31857 12 h after dark 7.90574 7.83047 7.946060000000001