Fig. 5
From: Effects of cleaning spray use on eyes, airways, and ergonomic load
Peak Nasal Inspiratory Flow (PNIF) difference for the three different cleaning scenarios. The average difference in PNIF value at each measurement time point compared to the first measurement in the morning, before the first half-hour cleaning exposure (individually normalized), for all 19 subjects, is shown. The error bars show the standard error of mean (SEM)