condition	mean	min	max
4 h after light	17.908450000000002	16.2444	19.5725
8 h after light	12.285499999999999	11.281	13.29
12 h after light	21.5732	19.7098	23.4366
4 h after dark	23.45935	21.7747	25.144
8 h after dark	29.07515	27.1942	30.9561
12 h after dark	27.603	26.2151	28.9909