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Hello and welcome!
For the VHF performance, both Tower Guy and Dave Loudin are right in suggesting a combo antenna. The problem you will find is that these combo antennas (and probably most antennas with any real VHF performance) like to be center-mounted. That is, they are usually designed to clamp onto a mast somewhere in the middle of their boom. They aren't made to be side mounted on a tower.
The combo antennas being recommended will definitely outperform the Philips antenna, but they would ideally be mounted on the mast at the top of your tower.
BTW, you may also want to re-run your analysis using an exact location. The report you posted is for a generic city-level analysis. Since some of the channels are being shown with 1Edge and 2Edge diffraction, it makes me wonder if the terrain blockage is better or worse at your exact location (sometimes local hills can make a difference).
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