condition mean min max 4 h after light 487.784045 400.770518 574.797572 8 h after light 446.650344 406.616672 486.684016 12 h after light 409.049567 338.625613 479.473521 4 h after dark 359.6461885 279.37117 439.921207 8 h after dark 318.222512 256.119457 380.325567 12 h after dark 443.798162 443.798162 443.798162