condition	mean	min	max
4 h after light	6.857936666666666	6.80805	6.89145
8 h after light	6.52787	6.35772	6.64239
12 h after light	6.564686666666667	6.45748	6.618510000000001
4 h after dark	6.9141	6.7702	7.130610000000001
8 h after dark	7.119643333333333	7.03137	7.292439999999999
12 h after dark	7.44529	7.12625	7.71373