Strange datalogging issue, maybe take a look and see if you know why?

I was datalogging my LS1 in the boost segments of the VE table on a speed density tune. 2 bar map sensor and OS. During playback I stopped the log at a section where the chart graph read 147kpa, I switched to the primary table and it was reading 194kpa.

All other pids and data was the same only the kpa varied. When the car is out of boost both the chart and primary table read the same. Sorry my computer crashed and I lost the datalog (thanks Microsoft for the update)