A solar motion table was developed taking into account the unevenness of the solar motion, and the interpolation method using unevenly-spaced quadratic difference (不等間隔二次差補間法) was used as well.
太陽運行の不均等性を考慮して太陽運行表が編制され、計算に不等間隔二次差補間法が用いられた。