And so that means we have to add 8.0. And the one right below seven is well, we have 3.1 and 4.1. This is the one right below it. And so that means we add 8.1 and we add eight and 4.1 and divide that by two. So the numerator is 12.1, denominator is two, and this gives us 6.5. So we see that the isoelectric point, the pi value for this peptide that consists of four amino acids is 6.05.