Applies sign corrections to both cross-spectra and auto-spectra fields within a list of CSSW data cells.
     
    
    Usage
    seasonder_applyCSSWSigns(cs_data)
 
    
    Arguments
- cs_data
- A list of CSSW data cells, where each cell may include fields for cross-spectra ('c12m', 'c12a', 'c13m', 'c13a', 'c23m', 'c23a') and auto-spectra ('cs1a', 'cs2a', 'cs3a') signs. 
 
    
    Value
    The modified list of CSSW data cells with sign corrections applied.