condition	mean	min	max
4 h after light	8.105043333333333	8.06938	8.12319
8 h after light	8.052409999999998	7.902769999999999	8.14712
12 h after light	8.125186666666668	8.0122	8.307360000000001
4 h after dark	8.01569	7.858219999999999	8.12322
8 h after dark	8.056646666666666	7.9671899999999996	8.11257
12 h after dark	8.17103	8.11755	8.24264