fix crs var detection

catalog/TTU_2019_rcp45_gridded_annual/collection.json

catalog/TTU_2019_rcp45_station_data/collection.json

catalog/TTU_2019_rcp45_time_slices/collection.json

catalog/TTU_2019_rcp85_gridded_annual/collection.json

catalog/TTU_2019_rcp85_station_data/collection.json

catalog/TTU_2019_rcp85_time_slices/collection.json

...19_rcp45_gridded_annual_create_collection_from_zarr.ipynb

...2019_rcp45_station_data_create_collection_from_zarr.ipynb

..._2019_rcp45_time_slices_create_collection_from_zarr.ipynb

...19_rcp85_gridded_annual_create_collection_from_zarr.ipynb

...2019_rcp85_station_data_create_collection_from_zarr.ipynb

..._2019_rcp85_time_slices_create_collection_from_zarr.ipynb