FRRf & O2 analyses.
ToDo:
Separate 1 s dark measures from actinic light measures in SolFitsTrim.
Add addtional ETR estimators (using dark measures).
Import and Tidy O2 optode data.
Align O2 rates with FRRf estimators.
Cross plot O2 rates vs. ETR estimators.
Derive KA calibration factor.