condition	mean	min	max
4 h after light	7.254496666666667	7.149310000000001	7.452369999999999
8 h after light	6.78794	6.64198	6.9542
12 h after light	6.703613333333333	6.66135	6.76929
4 h after dark	6.847473333333333	6.554930000000001	7.154319999999999
8 h after dark	7.3913199999999994	7.31608	7.46444
12 h after dark	7.858503333333333	7.8128899999999994	7.93319