Remove extra c from concsspm10

[dulte]

No description provided.

[WillemVanCaspel]

This fixes the reader! And this is why we need tests...

[codecov]

Codecov Report

Merging #633 (9aff533) into main-dev (42d2acf) will not change coverage.
The diff coverage is 0.00%.

@@            Coverage Diff            @@
##           main-dev     #633   +/-   ##
=========================================
  Coverage     76.90%   76.90%           
=========================================
  Files            98       98           
  Lines         17649    17649           
=========================================
  Hits          13573    13573           
  Misses         4076     4076           

Flag	Coverage Δ
unittests	76.90% <0.00%> (ø)

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Impacted Files	Coverage Δ
pyaerocom/io/read_mscw_ctm.py	95.08% <0.00%> (ø)

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