What is the normal range of calibration return values in a bike computer?

  The calibration return value of the Gen 1 power meter is around 100, with a fluctuation of ±100.
  The calibration return value of the Gen 2 power meter is around 600, with a fluctuation of ±200.

  The calibration return value of some Gen 1 power meters may be close to that of the Gen 2, which is within the normal range, so there is no need to worry.