condition	mean	min	max
4 h after light	6.830113333333333	6.79052	6.892519999999999
8 h after light	7.238526666666667	6.931080000000001	7.47832
12 h after light	7.4068966666666665	7.38501	7.42673
4 h after dark	7.245886666666667	7.053210000000001	7.54237
8 h after dark	7.0171399999999995	6.94183	7.10732
12 h after dark	6.87244	6.75967	7.062119999999999