That is way cool Kim ( teenage regression), I've always wanted to see what data, patterns, and info could be gleaned from those little data cards. After 3 years of observing the RTs collecting them monthly from my husbands two vents and the info disappearing into thin air, I finally got the bottom line answer that the respiritory company needed them to show compliance by the patient in order to get paid by insurance. Can't wait to hear what other info they provide that may actually help the patients respiritory.