condition mean min max 4 h after light 0.609579 0.580121 0.639037 8 h after light 0.2482515 0.177042 0.319461 12 h after light 0.3669525 0.303381 0.430524 4 h after dark 0.662603 0.572608 0.752598 8 h after dark 1.24959 1.23752 1.26166 12 h after dark 1.963505 1.82684 2.10017