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Table 2 Comparison of standard deviations for two chosen sections of the test line data

From: Repeatability analysis of airborne electromagnetic surveys

Nominal No. of Mean of Standard Deviation
Altitude Observations Actual Altitude of Actual Altitude
Section A: 3000–3500 m
90 m 415 91.1 3.76
85 m 438 84.7 6.26
80 m 418 79.4 4.06
75 m 441 74.3 5.21
70 m 397 69.7 4.35
65 m 426 65.1 5.80
60 m 408 56.9 4.41
Section B: 4800–5200 m
90 m 341 98.5 8.91
85 m 364 86.0 10.53
80 m 327 89.3 9.79
75 m 299 74.3 9.67
70 m 331 80.3 7.75
65 m 318 65.4 8.07
60 m 327 63.9 6.50
  1. Note that there is no clear relationship between the standard deviations and the actual altitudes. Outliers (as discussed in Section “Cleaning of test ights data set”) have been removed