divByZero if op00 = op01
If, user gives op00 = op01, the model proceeds and crashes due to divByZero in following lines
// Calculating the slope based on the first nonzero and the last defined data points.
p_effUnit(effSelector, unit, effSelector_, 'slope')
= (p_unit(unit, op__) / p_unit(unit, eff__) - p_unit(unit, 'op00') / p_unit(unit, 'eff00')) / (p_unit(unit, op__) - p_unit(unit, 'op00'));
Either fix or add abort