condition	mean	min	max
4 h after light	16.679850000000002	15.6135	17.7462
8 h after light	8.909485	8.53181	9.28716
12 h after light	12.5796	12.509	12.6502
4 h after dark	18.811433333333333	18.2362	19.2401
8 h after dark	24.347166666666666	23.0363	26.0771
12 h after dark	24.503933333333332	23.2419	25.989