The splits in the logbook are based on taking the instantaneous reading when the split timer ends a split. It's not averaged.
The graph should be created by taking a reading at the end of every stroke, so should always be more accurate.
Thank you Citroen. For some reason i noticed that when rowing the hear rate was changing on the PM5 screen but not on my phone so maybe it had to do with what the monitor was connected to (to the phone or the rower or both). I might do a bit of trial&error next time and then get C2 to have a look at the stored data as you said. Thanks again.
Ouch 176 Heartrate at only 2:11 pace.
Would probably be more worried about getting that HR down by rowing even slower for a few months.
You are definitely correct there Carl. Unfortunately it is the results of the quarantine & wokring long hours from home. Got a bit too excited with my new rower and first time tried 2:00 pace with my Hearrate being 189~190. I decided to live a bit longer

and this was the second time but as you said maybe i should slow down a bit...i am not 15 anymore and its obvious.