condition	mean	min	max
0 h after light	17.60905	16.793	18.4251
4 h after light	17.1477	16.0642	18.2312
8 h after light	19.259050000000002	19.1853	19.3328
4 h after dark	22.57095	20.599	24.5429
8 h after dark	21.99355	21.3444	22.6427
12 h after dark	19.3795	17.569	21.19