The dataset AVLTIME_NLREG.txt is to be fitted to the function Y=A*X+B. First, the data will be checked for outliers that should be rejected because they fall outside the "Prediction Band, PB" at a 95.4% confidence level. If any such points exist, a new dataset will be created, preserving the original data and excluding the points that fall outside the PB.
Point number 48 falls outside the "Prediction Band" (at a 95.4% confidence level). Therefore, it must be discarded, as will be shown in the following.