Fig. 1.

A. Training example of high confidence, interpretable CF tracing demonstrating lack of interfering artifacts, shifts, or catheter displacements with biologically plausible values and absence of missing or incomplete tracing portions. B. Training example of low-confidence, interpretable CF tracing due to excessive artifacts interfering with interpretability but displaying biologically plausible responses and the absence of missing or incomplete portions of the tracings. C. Training example of an uninterruptable CF tracing due to an incomplete chloride portion of the tracing due to catheter displacement with biologically implausible responses to amilioride and ATP controls. D. Training example of an unintepretable CF tracing due to excessive artifacts affecting the signal-to-noise ratio throughout with biologically implausible responses to amilioride and ATP controls.