casacore-data-igrf software package provides International Geomagnetic Reference Field data for casacore, you can install in your Ubuntu 17.04 (Zesty Zapus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install casacore-data-igrf
casacore-data-igrf is installed in your system.
Make ensure the casacore-data-igrf package were installed using the commands given below,
$ sudo dpkg-query -l | grep casacore-data-igrf *
You will get with casacore-data-igrf package name, version, architecture and description in a table
| Distro | Ubuntu 17 |
| Section | Science |
| Package | casacore-data-igrf |
| Version | 10-01-16 |
| Description | International Geomagnetic Reference Field data for casacore |
| Sub Section | Science |