condition mean min max 4 h after light 5.28143 5.23898 5.32388 8 h after light 8.07492 7.84255 8.30729 12 h after light 11.16525 10.3184 12.0121 4 h after dark 10.403649999999999 10.1142 10.6931 8 h after dark 7.34542 6.90327 7.78757 12 h after dark 6.66614 6.34567 6.98661