condition	mean	min	max
4 h after light	8.010473	7.931392	8.089554
8 h after light	8.7645765	8.208965	9.320188
12 h after light	8.8507935	8.360437	9.34115
4 h after dark	8.554698	8.321635	8.787761
8 h after dark	9.0013745	8.604513	9.398236
12 h after dark	8.975782	8.975782	8.975782