regressor_coefficients: Summarise the coefficients of the extra regressors used in...
In prophet: Automatic Forecasting Procedure

Coefficients are measured on the original scale of the training data.

1	regressor_coefficients(m)

`m`	Prophet model object, after fitting.

Output dataframe columns:

regressor: Name of the regressor
regressor_mode: Whether the regressor has an additive or multiplicative effect on y.
center: The mean of the regressor if it was standardized. Otherwise 0.
coef_lower: Lower bound for the coefficient, estimated from the MCMC samples. Only different to coef if mcmc_samples > 0.
coef: Expected value of the coefficient.
coef_upper: Upper bound for the coefficient, estimated from MCMC samples. Only to different to coef if mcmc_samples > 0.