condition	mean	min	max
0 h after light	19.5779	19.2999	19.8559
4 h after light	22.21995	20.5563	23.8836
8 h after light	14.983	14.9002	15.0658
4 h after dark	17.59755	16.6419	18.5532
8 h after dark	20.2087	18.5649	21.8525
12 h after dark	18.3945	17.281	19.508