condition	mean	min	max
0 h after light	18.96145	18.4134	19.5095
4 h after light	17.9974	16.5416	19.4532
8 h after light	38.69775	34.3089	43.0866
4 h after dark	43.1731	40.7641	45.5821
8 h after dark	27.63775	26.562	28.7135
12 h after dark	18.73695	16.8192	20.6547