The varunayan package is released under the MIT licence (see LICENSE), with
the following third-party components.

R/wbgt_liljegren.R
------------------
An R translation, by Saket Choudhary (IIT Bombay), of wbgt.c (WBGT Version
1.1) by James C. Liljegren, Argonne National Laboratory. The changes are
listed at the top of that file.

This product includes software produced by UChicago Argonne, LLC under
Contract No. DE-AC02-06CH11357 with the Department of Energy.

               Copyright (c) 2008, UChicago Argonne, LLC
                       All Rights Reserved

                        WBGT, Version 1.1

                       James C. Liljegren
              Decision & Information Sciences Division

                       OPEN SOURCE LICENSE

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.  Software changes,
   modifications, or derivative works, should be noted with comments and
   the author and organization's name.

2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

3. Neither the names of UChicago Argonne, LLC or the Department of Energy
   nor the names of its contributors may be used to endorse or promote
   products derived from this software without specific prior written
   permission.

4. The software and the end-user documentation included with the
   redistribution, if any, must include the following acknowledgment:

   "This product includes software produced by UChicago Argonne, LLC
   under Contract No. DE-AC02-06CH11357 with the Department of Energy."

DISCLAIMER

THE SOFTWARE IS SUPPLIED "AS IS" WITHOUT WARRANTY OF ANY KIND.

NEITHER THE UNITED STATES GOVERNMENT, NOR THE UNITED STATES DEPARTMENT OF
ENERGY, NOR UCHICAGO ARGONNE, LLC, NOR ANY OF THEIR EMPLOYEES, MAKES ANY
WARRANTY, EXPRESS OR IMPLIED, OR ASSUMES ANY LEGAL LIABILITY OR
RESPONSIBILITY FOR THE ACCURACY, COMPLETENESS, OR USEFULNESS OF ANY
INFORMATION, DATA, APPARATUS, PRODUCT, OR PROCESS DISCLOSED, OR REPRESENTS
THAT ITS USE WOULD NOT INFRINGE PRIVATELY OWNED RIGHTS.

utci_sparse() in R/heat_stress.R
--------------------------------
Coefficients from Roman, S. (2025). Code for Approximating the universal
thermal climate index (UTCI) using sparse regression with orthogonal
polynomials. Zenodo. doi:10.5281/zenodo.17465548. Licensed CC BY 4.0.

tests/testthat/fixtures/utci_brode2012.tsv
------------------------------------------
Bröde, P. (2021). UTCI-Test-Data. Zenodo. doi:10.5281/zenodo.5503968.
Licensed CC BY 4.0.