condition	mean	min	max
4 h after light	20.190533	16.803568	23.577498
8 h after light	16.6689055	16.327785	17.010026
12 h after light	15.5973435	14.391119	16.803568
4 h after dark	15.971650499999999	14.606809	17.336492
8 h after dark	16.177092	15.811772	16.542412
12 h after dark	20.607582	20.607582	20.607582