Such values have been very often discussed, but are of minor importance! They are important in case of a ladderline used as a TRAVELLING WAVES FEEDER! But as a STANDING WAVES REEDER for a symmetrical antenna - dipoles! - the antenna works as a MULTIBAND-SYSTEM! CONSEQUENTLY for reaching this you must combine it with a BALANCE ANTENNA TUNER for all bands; thus producing the typical antiphased RF along the ladderline.