condition mean min max 4 h after light 2.2916 2.2294 2.3538 8 h after light 1.9836749999999999 1.97362 1.99373 12 h after light 2.446425 2.3873 2.50555 4 h after dark 3.277755 3.2387 3.31681 8 h after dark 2.6923399999999997 2.53497 2.84971 12 h after dark 2.9231 2.74183 3.10437