condition mean min max 4 h after light 8.10028 7.48067 8.71989 8 h after light 6.86154 6.47273 7.25035 12 h after light 12.291599999999999 11.7141 12.8691 4 h after dark 14.71105 14.4473 14.9748 8 h after dark 15.408550000000002 14.1652 16.6519 12 h after dark 13.278749999999999 13.0459 13.5116