Understanding a lumpy Pace Chart

[MedTechCD]

The same question came up a number of times regarding strange Power curves:

FTP curve correct?

On the FTP curve I see that my 19 minute max is 246 [image] 20 minute max is 248 [image] and 21 minute max is 250 [image] my 19 and 20 min max should also be at least 250 so I think something is wrong in the curve. a similar situation exists on the FTP curve at 25 minutes → 245 [image] and at 28 minutes → 247 [image] also at 95 seconds → 386 [image] and at 70-90 seconds → 385 [image]