condition	mean	min	max
4 h after light	17.45765	14.3005	20.6148
8 h after light	13.4248	13.3638	13.4858
12 h after light	14.82495	13.8759	15.774
4 h after dark	22.5275	20.198	24.5521
8 h after dark	27.216	25.0205	29.5755
12 h after dark	19.038233333333334	18.1593	19.7324