condition	mean	min	max
4 h after light	3.23621	2.75959	3.71283
8 h after light	2.146165	2.00845	2.28388
12 h after light	3.9508	3.92135	3.98025
4 h after dark	4.52183	4.43205	4.61161
8 h after dark	4.442165	3.97851	4.90582
12 h after dark	4.034185	3.6323	4.43607