Table 2. Fitting results of the TSK-PLA regression model of Eq. (17) for the Echavarría-Heras et al. (2019a) data set, assuming heteroscedasticity in the form given by Eq. (35).

Residual statistics
Minimum	1Q	Median	3Q	Maximum
−4.4478	−0.2273	−5.99 ×10−5	0.1936	7.5718