Bill,
Take a look at this link.
http://www.visi.com/~rhayman/smog_fa...Catalyst%20Out
From your data I see the folowing trend.
CO2 % HC PPM
13.7 218
14.4 220
14.8 26
15.1 98
15.1 117
15.5 1
If you read the FAQ it indicates that HC will drop with the catalyst fully warm and that the CO2% will increase. So the real question is how long after you turned off your car did they do the test. (i.e. was it still warm for the test?)
Check out the link it should answer a lot of your questions.
Good Luck
Paul
89 535ia 228k