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Table E.2.

Frequency convergence with latitudinal resolution, Nθ.

Nθ mode 5. (b) mode 4. (b)
60 −240.068 − 25.593i −136.740 − 11.067i
50 −240.112 − 25.618i −136.740 − 11.067i
40 −239.401 − 24.789i −136.740 − 11.064i
30 −241.352 − 25.832i −136.765 − 11.083i

Notes. Same convergence check as in Table E.1, but with respect to Nθ. The radial resolution is fixed at Nr = 180.

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