condition	mean	min	max
4 h after light	1.64764	1.50253	1.79275
8 h after light	1.7903	1.74862	1.83198
12 h after light	2.207605	2.12459	2.29062
4 h after dark	3.28095	3.06949	3.49241
8 h after dark	3.200005	3.06569	3.33432
12 h after dark	2.514285	2.3023	2.72627