.CalculateGaussCoef {wmm}

Lookup Table for Gauss coefficients g & h

Description

Find Gauss coefficient g_{n,m}(t) consistent with the World Magnetic Model.

Usage

.CalculateGaussCoef(t, t0, wmmVersion = "derived")

Arguments

t

Annualized date time. E.g., 2015-02-01 = (2015 + 32/365) = 2015.088

t0

Annualized reference time associated with t

wmmVersion

String representing WMM version to use. Must be consistent with time and one of the following: 'derived', 'WMM2000', 'WMM2005', 'WMM2010', 'WMM2015', 'WMM2015v2', 'WMM2020'. Default 'derived' value will infer the latest WMM version consistent with time.

Value

vector of Gauss coefficients, g_{n,m}(t) and h_{n,m}(t)