condition	mean	min	max
4 h after light	7.431075	6.90084	7.96131
8 h after light	7.370415	6.59853	8.1423
12 h after light	6.94902	6.06552	7.83252
4 h after dark	10.950425	9.55435	12.3465
8 h after dark	8.902455	8.52722	9.27769
12 h after dark	9.352715	8.31693	10.3885