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Table 9 Mean angle between center-to-center lengths, 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, show % C. V. to be within the normal acceptable level (with 5% confidence level in analytical work)

From: Reproducibility of fingerprint microfeatures

Angle between center-to-center lengths Mean angle (0) S. D. % C. V.
Individual 1 Angle 1 164.35 6.47 3.93
Angle 2 188.38 7.42 3.94
Individual 2 Angle 1 196.18 2.11 1.07
Angle 2 192.19 4.03 2.10
Individual 3 Angle 1 193.03 6.27 3.25
Angle 2 189.26 6.77 3.58
Individual 4 Angle 1 146.83 5.63 3.84
Angle 2 152.68 4.89 3.20