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Comparison of the PWIP results with global PWV estimation using wavefront tracking for all 5 subjects (S1–S5). For each subject, the mean Bramwell-Hill PWV (cbh) for the PWIP across 5 repeated scans is depicted by blue boxes on the left, and the PWV estimated by wavefront tracking across 5 repeated scans is depicted by green boxes on the right. Subject 4 and 5 had a statistically significant difference between the two methods.
