fix msw nan values - Githubissues

Changes proposed in this Pull Request

bug fix of nan values due to different indices in the transport cost data

[ ] I tested my contribution locally and it works as intended.
[ ] Code and workflow changes are sufficiently documented.
[ ] Changed dependencies are added to envs/environment.yaml.
[ ] Changes in configuration options are added in config/config.default.yaml.
[ ] Changes in configuration options are documented in doc/configtables/*.csv.
[ ] Sources of newly added data are documented in doc/data_sources.rst.
[ ] A release note doc/release_notes.rst is added.