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Table 2 Comparison of the degree 360 anomaly estimates (nT) from the S360 and NGDC720 models over the study area in Fig. 4

From: Utility of Slepian basis functions for modeling near-surface and satellite magnetic anomalies of the Australian lithosphere

Components S360 estimates NGDC720 (n ≤ 360) estimates CC RMS errors
Max.; Min. Avg. Std. Max.; Min. Avg. Std.
Satellite altitude (320 km, 0.5° × 0.5° grid)
 B r 20.64; −16.05
(20.64; −15.82)
0.31
(1.39)
4.95
(5.82)
21.00; −17.29
(21.00; −17.29)
0.04
(0.99)
4.96
(5.93)
0.984
(0.996)
0.910
(0.665)
 B θ 15.94; −14.74
(14.21; −14.74)
0.02
(−0.17)
3.82
(4.43)
15.20; −15.08
(14.18; −15.08)
−0.10
(−0.45)
3.84
(4.47)
0.988
(0.998)
0.647
(0.388)
 B φ 9.77; −7.56
(9.77; −7.41)
0.09
(0.18)
2.91
(3.40)
9.98; −8.58
(9.98; −7.03)
−0.03
(0.06)
2.97
(3.41)
0.974
(0.990)
0.685
(0.510)
Near surface (0.25° × 0.25°)
 ΔT 832.4; −455.0
(832.4; −455.0)
−1.99
(3.93)
95.8
(113.6)
871.8; −438.7
(765.5; −438.7)
−0.52
(4.08)
83.45
(101.3)
0.89
(0.97)
44.2
(27.7)
  1. See Table 1 for the abbreviations of the listed statistics. The numbers in parentheses are for the Australian mainland and Tasmania