condition	mean	min	max
4 h after light	6.9254766666666665	6.84351	7.0046800000000005
8 h after light	7.133723333333333	6.9922699999999995	7.2937899999999996
12 h after light	7.177736666666667	7.068169999999999	7.37593
4 h after dark	7.63187	7.477530000000001	7.7945199999999994
8 h after dark	7.371653333333334	7.0883199999999995	7.675680000000001
12 h after dark	7.231546666666667	6.985130000000001	7.58148