condition	mean	min	max
4 h after light	7.6967566666666665	7.6231	7.77502
8 h after light	7.94019	7.6982	8.20251
12 h after light	7.92977	7.7679100000000005	8.17389
4 h after dark	7.916763333333334	7.836110000000001	8.01432
8 h after dark	7.904053333333333	7.8516699999999995	7.9585
12 h after dark	7.943656666666667	7.76727	8.180530000000001