condition	mean	min	max
4 h after light	7.7074766666666665	7.597569999999999	7.86475
8 h after light	7.789763333333334	7.679530000000001	7.8617300000000006
12 h after light	7.767093333333333	7.74713	7.796289999999999
4 h after dark	7.976373333333334	7.882160000000001	8.1097
8 h after dark	8.006079999999999	7.839589999999999	8.224269999999999
12 h after dark	8.066863333333334	7.9389899999999995	8.16611