It doesn't say where the 152 astrologers were sourced, does it? Or how they were qualified? Should astrology be a field with very many impostors, these results

It doesn't say where the 152 astrologers were sourced, does it? Or how they were qualified? Should astrology be a field with very many impostors, these results would not be unusual. Generally speaking I suspect it will be difficult to falsify astrology, but more importantly the onus is on the astrologer to prove their ability rather than for others to disprove it.