condition mean min max 4 h after light 5.77489 5.50961 6.04017 8 h after light 4.9498 4.4329 5.4667 12 h after light 6.033519999999999 5.68821 6.37883 4 h after dark 7.572605 7.4146 7.73061 8 h after dark 7.348380000000001 6.72566 7.9711 12 h after dark 6.824315 6.56464 7.08399