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Table 4

Coefficients of the linear or quadratic fit used to construct the corrected pseudo-indices and marked as dashed lines in Figs. 48, respectively.

Index a b c

NGC 2158
S3839H −0.59 ± 0.19 0.004 ± 0.011
S3839N −0.31 ± 0.22 0.001 ± 0.013
S4142 −0.22 ± 0.06 −0.006 ± 0.003
CH4300 −0.60 ± 0.14 0.007 ± 0.008

NGC 2420
S3839H 8.85 ± 1.74 −1.22 ± 0.22 0.040 ± 0.007
S3839N 9.55 ± 1.61 −1.28 ± 0.20 0.042 ± 0.006
S4142 −2.14 ± 0.70 0.24 ± 0.09 −0.008 ± 0.003
CH4300 2.23 ± 0.87 −0.39 ± 0.11 0.014 ± 0.003

NGC 2682

S3839H −13.60 ± 244.49 1.59 ± 32.65 −0.05 ± 1.09
S3839N −8.56 ± 13.29 0.92 ± 1.82 −0.02 ± 0.06
S4142 2.81 ± 9.55 −0.42 ± 0.13 0.01 ± 0.04
CH4300 −2.34 ± 6.27 0.22 ± 0.80 −0.006 ± 0.028

NGC 7789
S3839H 0.11 ± 3.74 0.15 ± 2.84
S3839N 0.45 ± 3.96 0.15 ± 3.01
S4142 −1.33 ± 0.96 0.89 ± 0.73
CH4300 −0.54 ± 0.28 0.18 ± 0.22

Berkeley 29
S3839H −0.39 ± 6.90 −0.00 ± 0.35
S3839N −3.24 ± 4.16 0.15 ± 0.21
S4142 −0.00 ± 1.37 −0.02 ± 0.07
CH4300 −0.98 ± 1.41 0.02 ± 0.07

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