Coh's Houses Tables. A Guide to Calculating House Cusps

The tables provide house values from 0 to 60 degrees of latitude according to the Coh system and from 61 to 90 degrees of latitude according to the Porphyry system.
Coordinates of six house cusps are given: MC - the top... part of the table (the same for any latitude) and the coordinates of 11, 12, 1 (ASC), 2, 3 houses, which depend on the latitude of the place of birth.
The coordinates of the remaining 6 cusps are in opposition to those found in the table.
The values of house cusps are provided for every 4 minutes of local sidereal time and for each whole degree of latitude.
After the main text of the tables, a brief historical reference is provided along with descriptions of the Coh and Porphyry house systems, guidance on constructing a horoscope using the data from the tables, and accompanying reference materials.