Criterion 1
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3–15
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3–15
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3
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This criterion was met for stationary tests (Figure 4), but the mobile test would have required a very low HPE to attain below 1.77 m of average error as the unfiltered accuracy was lower (Figure 3). See review of the mobile test methodology in the Discussion.
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Mean ≤1.77 m
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Criterion 2
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<7
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<8
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≤15
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An HPE of 8 did not meet the criteria for stationary tests, but only 1 of 625 positions (test one) and 1 of 134 positions (test two) remained. The mobile test criteria were met. Only 2 of 45,744 positions were problematic (<0.001%) for the combined stationary tests (Figure 4). The maximum point remaining was 17.7 m error.
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Max error <15 m
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Criterion 3
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8.5
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6.0
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NA
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The criterion was met for stationary test one, which was the longer test that covered more variable weather conditions. The HPE 8 bin only was 95% confident in an HPE of 8.25 meters for test two but the estimate was based on data calculated within each bin and few points had an HPE of >6 for test two (3% of the data), which results in a less reliable 2DRMS prediction.
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2DRMS ≤6 m
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Criterion 4
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8–10
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3–15
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None
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An HPE cutoff of 8 met the criteria for both stationary tests, and although the mobile test did not have a suitable range, the range from 5–10 was equally effective.
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Percentage incorrectly retained vs. percentage incorrectly rejected
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5–10
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