In case anyone else was trying to figure this out, here is what I found. The smartd temperature reports are a not right for many drives. The number shown is actually a composite of several temperatures.
Several sources on the net people suggest -I 190 and -I 194 as you suggest. However I did find that the -w flag seems to track temperature changes more accurately so I ended up using -w 4,45,55. I believe this will only record changes >4 degrees, and log an alarm at 45. My full config ( /etc/smartd.conf) per drive is:
/dev/sda -a -o on -S on -s (S/../.././02||L/../../6/03) -I 190 -I 194 -w 4,45,55
I have it set to do a short test each day at 2AM and a long test Saturday at 3AM.
I found this article to be very helpful:
Monitoring Hard Disks with SMART
Thanks for the help.