condition	mean	min	max
4 h after light	8.925343333333334	8.894810000000001	8.95378
8 h after light	8.15886	8.022310000000001	8.3157
12 h after light	8.315353333333332	8.24061	8.464139999999999
4 h after dark	7.859386666666667	7.773810000000001	7.9177800000000005
8 h after dark	8.128186666666666	7.8522300000000005	8.268839999999999
12 h after dark	8.50149	8.46486	8.53135