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Table 7 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 right thumb of four individuals on sticky side of adhesive tape (using method described in (iii)), recorded on ten consecutive days, show % C. V. to be within and/or near the normal acceptable level (with 5% confidence levels in analytical work), thereby demonstrating the reliability and reproducibility of pore inter-distance for matching fingerprints

From: Reproducibility of fingerprint microfeatures

Center-to-center length Mean pore-to-pore distance taken from center (μm) S. D. % C. V.
Individual 1 Pore1-Pore2 408.94 16.72 4.09
Pore2-Pore3 288.47 12.86 4.46
Pore3-Pore4 294.29 11.86 4.03
Individual 2 Pore1-Pore2 375.19 18.92 5.04
Pore2-Pore3 436.15 15.60 3.58
Pore3-Pore4 380.87 9.69 2.54
Individual 3 Pore1-Pore2 553.21 17.85 3.23
Pore2-Pore3 440.14 19.90 4.52
Pore3-Pore4 653.77 17.17 2.63
Individual 4 Pore1-Pore2 370.53 17.29 4.67
Pore2-Pore3 515.78 17.41 3.38
Pore3-Pore4 484.45 20.94 4.32