condition	mean	min	max
0 h after light	19.262500000000003	18.838	19.687
4 h after light	20.1795	19.0318	21.3272
8 h after light	25.34485	22.9638	27.7259
4 h after dark	28.950400000000002	28.6642	29.2366
8 h after dark	26.277549999999998	25.9853	26.5698
12 h after dark	21.343	19.6256	23.0604