Table 5 Mean pore center-to-center distance, standard deviation (S. D.), and % coefficient of variation (% C.V.) of four pores, taken from fingerprints obtained from the left thumb of four individuals on glass, recorded on ten consecutive days, shows % C. V. to lie within and/or near acceptable levels (with 5% confidence level in analytical work), thereby demonstrating the reliability and reproducibility of pore inter-distance for matching fingerprints

From: Reproducibility of fingerprint microfeatures