condition	mean	min	max
4 h after light	7.966503333333334	7.63535	8.20711
8 h after light	8.056373333333333	7.94343	8.245560000000001
12 h after light	7.41199	7.2106	7.811380000000001
4 h after dark	6.676123333333334	6.2805800000000005	7.1022300000000005
8 h after dark	7.103006666666667	6.57908	7.572830000000001
12 h after dark	7.55308	6.9713899999999995	7.875839999999999