lat1 | yes | | decimal degrees or degrees minutes seconds: -90.0 to 90.0 |

lon1 | yes | | decimal degrees or degrees minutes seconds: -180.0 to 180.0 |

model | | IGRF | which magnetic reference model to use: 'WMM' or 'IGRF' |

startYear | | current year | year part of calculation date: 1900 - 2014 |

startMonth | | current month | month part of calculation date: 1 - 12 |

startDay | | current day | day part of calculation date: 1 - 31 |

resultFormat | | html | format of calculation results: 'html', 'csv', 'xml', or 'pdf' |