Abbreviations (PNL, Peak, Valley, Imum Coeli)
A few of the abbreviations that appear on the Colors Tab may be mysterious to you if you are new to Hellenistic astrology. The PNL stands for Prenatal Lunation. The Peak is a reference to the "place at peak" and is always 90 degrees from the ascendant and above the horizon. The Valley is always opposite to the place at peak. "Valley" doesn't show up in the literature, but I had to come up with a name for this. The Imum Coeli is Latin and is always opposite the midheaven degree.