Partition the universe of T into fuzzy subsets freezing (F), cold (C), warm (W) and hot (Ho), which are represented by evenly distributed triangular-type membership functions.
the ambient temperature varies between –20 C and 40 C
PIRC (2020). Fuzzy Triangle Membership Function for Solar Temperature (https://www.mathworks.com/matlabcentral/fileexchange/69246-fuzzy-triangle-membership-function-for-solar-temperature), MATLAB Central File Exchange. Retrieved .