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Table 6 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 index finger of four individuals on sticky side of adhesive tape (using method described in (ii)), recorded on ten consecutive days, shows % C. V. to lie 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 366.29 20.37 5.56
Pore2-Pore3 347.14 20.55 5.92
Pore3-Pore4 411.69 12.88 3.12
Individual 2 Pore1-Pore2 284.38 6.79 2.39
Pore2-Pore3 287.05 13.03 4.54
Pore3-Pore4 229.19 17.07 7.45
Individual 3 Pore1-Pore2 299.48 13.16 4.40
Pore2-Pore3 396.53 19.58 4.94
Pore3-Pore4 286.18 23.39 8.17
Individual 4 Pore1-Pore2 254.91 18.10 7.10
Pore2-Pore3 348.89 19.04 5.46
Pore3-Pore4 525.73 24.74 4.71