condition	mean	min	max
4 h after light	6.66189	6.00742	7.571330000000001
8 h after light	8.50247	8.10014	9.13331
12 h after light	8.506823333333333	8.16238	8.707189999999999
4 h after dark	6.464243333333333	6.16001	6.72325
8 h after dark	6.32332	6.10829	6.733560000000001
12 h after dark	5.63528	5.36979	6.0277199999999995