Fig. 4

Spread of total absorbance across a five day period. Boxplots showing the spread of results of total absorbance measured from absorbance spectra of stain assessment slides stained in three staining instruments in a clinical laboratory during Experiment 3b. Five slides were stained in each stain instrument per day, using the same staining protocol, over a period of five days (n = 25 per stain instrument). Stainer-1 box is 79 – 104, whiskers are 50 – 138 with median of 91 and an outlier at 40. Stainer-2 box is 70 – 97, whiskers are 41 – 114 with a median of 83. Stainer-3 box is 70 – 107, whiskers are 43 – 159 with a median of 90