// If we"re not doing CEMS, just stop here to avoid printing messages like
// "Reading EPA CEMS data...", which could be confusing.
if states[0].lower() == "none":
return None
if states[0].lower() == "all":
states = list(pc.cems_states.keys())
if not epacems_years:
return
After Change
// "Reading EPA CEMS data...", which could be confusing.
// if states[0].lower() == "none":
// return None
if not states:
if verbose:
print("Not ingesting EPA CEMS.")
return None
if states[0].lower() == "all":
states = list(pc.cems_states.keys())
if not epacems_years: