Improved Potential Energy Surface of Ozone Constructed Using the Fitting by Permutationally Invariant Polynomial Function

Table 1

The number of adjustable coefficients, 𝑀, versus the polynomial order, 𝐽.

𝐽	10	11	12	13	14	15	16	17	18	19	20
𝑀	67	83	102	123	147	174	204	237	274	314	358