condition	mean	min	max
4 h after light	8.75678	8.26827	9.24529
8 h after light	11.778749999999999	10.5163	13.0412
12 h after light	13.17915	11.2442	15.1141
4 h after dark	19.926433333333332	18.3174	21.6287
8 h after dark	17.960333333333335	15.9623	18.9844
12 h after dark	16.615533333333335	15.1149	19.1123