condition mean min max 4 h after light 1.070793 0.885866 1.25572 8 h after light 0.8056165 0.512663 1.09857 12 h after light 0.999213 0.996626 1.0018 4 h after dark 1.4870999999999999 1.33242 1.64178 8 h after dark 1.690675 1.20669 2.17466 12 h after dark 1.358355 1.07999 1.63672