condition	mean	min	max
4 h after light	19.172150000000002	18.7481	19.5962
8 h after light	16.22885	14.1307	18.327
12 h after light	18.8688	18.2004	19.5372
4 h after dark	20.4687	19.5678	21.3696
8 h after dark	20.449849999999998	19.8512	21.0485
12 h after dark	19.8975	19.1611	20.6339