condition	mean	min	max
4 h after light	7.823655500000001	7.646142	8.001169
8 h after light	8.076642	8.001169	8.152115
12 h after light	7.567610999999999	6.989301	8.145921
4 h after dark	7.8669885	7.811025	7.922952
8 h after dark	7.677151	6.861721	8.492581
12 h after dark	7.403537	7.403537	7.403537