condition	mean	min	max
4 h after light	9.091176666666668	8.97198	9.2422
8 h after light	9.037356666666668	8.69926	9.28837
12 h after light	8.91694	8.836910000000001	8.96521
4 h after dark	8.929973333333333	8.614239999999999	9.11998
8 h after dark	8.97321	8.757819999999999	9.09018
12 h after dark	8.76335	8.70987	8.80052