condition	mean	min	max
4 h after light	8.831763333333333	8.76685	8.864930000000001
8 h after light	8.823143333333332	8.698889999999999	8.898639999999999
12 h after light	8.95015	8.77932	9.141010000000001
4 h after dark	8.83021	8.74525	8.98349
8 h after dark	8.70978	8.65697	8.81029
12 h after dark	8.868573333333334	8.75977	9.061069999999999