Tunning OPTICAL FLOW sensor

Hi all,

I’m trying to calibrate my optical flow sensor. I followed this part of the wiki and got these results. Can they be acceptable or can I improve something?

thanks!
https://ardupilot.org/copter/docs/common-px4flow-overview.html#calibrating-the-sensor

2020-04-11 12-44-20_test optical.bin (443.3 KB)

this is my sensor: