condition	mean	min	max
0 h after light	17.9448	17.4758	18.4138
4 h after light	17.50715	16.0051	19.0092
8 h after light	14.48415	13.1838	15.7845
4 h after dark	19.31725	16.8949	21.7396
8 h after dark	16.5273	14.9193	18.1353
12 h after dark	15.877500000000001	15.3849	16.3701