condition	mean	min	max
4 h after light	22.036002500000002	21.929206	22.142799
8 h after light	17.902055	17.81992	17.98419
12 h after light	18.4067185	18.197904	18.615533
4 h after dark	17.626822500000003	17.202162	18.051483
8 h after dark	19.128441000000002	18.49635	19.760532
12 h after dark	19.040723	19.040723	19.040723