condition	mean	min	max
4 h after light	17209.6	17209.6	17209.6
8 h after light	17782.95	16163.0	19402.9
12 h after light	16309.900000000001	14566.1	18053.7
4 h after dark	20143.800000000003	15443.2	24844.4
8 h after dark	19379.45	16428.2	22330.7
12 h after dark	18551.2	17908.0	19194.4