condition mean min max 4 h after light 0.742638 0.726958 0.758318 8 h after light 0.2548485 0.226531 0.283166 12 h after light 0.487444 0.46111 0.513778 4 h after dark 0.446948 0.386911 0.506985 8 h after dark 0.7399805 0.736708 0.743253 12 h after dark 0.8492685 0.747637 0.9509