condition	mean	min	max
4 h after light	19.05805	18.5484	19.5677
8 h after light	16.026	14.6187	17.4333
12 h after light	20.07475	19.4992	20.6503
4 h after dark	20.328966666666666	19.3132	21.7268
8 h after dark	21.7968	19.8908	23.8555
12 h after dark	21.118	20.1471	22.0427