condition mean min max 0 h after light 7.825655 7.05594 8.59537 2 h after light 11.389800000000001 10.3237 12.4559 4 h after light 9.671240000000001 8.91858 10.4239 8 h after light 9.210484999999998 8.96482 9.45615 12 h after light 10.975249999999999 10.7699 11.1806 2 h after dark 7.748335 7.59874 7.89793 4 h after dark 8.0708 7.08449 9.05711 8 h after dark 10.117519999999999 9.71154 10.5235 12 h after dark 8.19596 7.43274 8.95918