This is a measure of how much the sampling point spacing differs between the X and Y axes.A value of 0 means there is no difference.

AxialNonUniformityGrade is derived from AxiaNonUniformity as follows:

• A: 0.00 ≤ x ≤ 0.06
• B: 0.06 < x ≤ 0.08
• C: 0.08 < x ≤ 0.10
• D: 0.10 < x ≤ 0.12
• F: 0.12 < x ≤ 1.00

This is a measure of how much the sampling point spacing differs from one axis to another. A(negligible), B, C, D, or F(excessive).

The FixedPatternDamageGrade is the lowest of the five segment grades and the grade for AG. Grading of AG:

GridNonUniformityGrade is derived from GridNonUniformity as follows:

• A: x ≤ 0.38
• B: 0.38 < x ≤ 0.50
• C: 0.50 < x ≤ 0.63
• D: 0.63 < x ≤ 0.75
• F: x > 0.75

Modulation is a measure of the uniformity of reflectance of the dark and light modules respectively. Modulation, if insufficient, may increase the probability of a module being incorrectly identified as dark or light. ModulationGrade is derived from Modulation as follows:

• A: x ≥ 0.5
• B: x ≥ 0.4
• C: x ≥ 0.3
• D: x ≥ 0.2
• F: x < 0.2

Range is 0.0 (no contrast) to 1.0 (full contrast).

SymbolContrastGrade is derived from SymbolContrast as follows:

• A: 0.70 ≤ x < 1.00
• B: 0.55 ≤ x < 0.70
• C: 0.40 ≤ x < 0.55
• D: 0.20 ≤ x < 0.40
• F: 0.00 ≤ x < 0.20

The higher the unused error correction capacity, the better the symbol quality. Ranges from 0 (all error correction capacity used) to 1.0 (no error correction capacity used).

UECGrade is derived from UEC as follows:

• A: x ≥ 0.62
• B: x ≥ 0.50
• C: x ≥ 0.37
• D: x ≥ 0.25
• F: x < 0.25

The greater the unused error correction capacity, the better the grade. A(almost all capacity is unused), B, C, D, or F(all, or almost all capacity is used).