condition	mean	min	max
4 h after light	17.221671999999998	16.56008	17.883264
8 h after light	17.682544999999998	15.967049	19.398041
12 h after light	17.83777	17.390357	18.285183
4 h after dark	21.6272405	19.825249	23.429232
8 h after dark	20.109415	18.285183	21.933647
12 h after dark	18.351505	18.351505	18.351505