Coefficients in data units: linear [a, b] (y = a + bx), exponential [a, b]
(y = a·e^(bx)), logarithmic [a, b] (y = a + b·ln(x)), polynomial [c0, .., ck]
(ascending powers of x). Empty when the series has too few distinct points to fit
Equation, e.g. y = 1.234x + 5.6 (empty without a fit)
OptionalorderPolynomial order (polynomial fits only)
Points fitted
1 - SS_res / SS_tot of the curve against the original y of the fitted points (NaN without a fit or when every y is equal)
Series id fitted
Finite points outside the model's domain, left out of the fit (y <= 0 exponential, x <= 0 logarithmic)
Least-squares fit of one drawn trendline.