The frequency or periodicity of required monitoring.
1T One Time.
YR 1 Year.
2Y 2 Years.
3Y 3 Years.
4H 4 Hours.
4Y 4 Years.
5Y 5 Years.
6M 6 Months.
6Y 6 Years.
7Y 7 Years.
8Y 8 Years.
9Y 9 Years.
10Y 10 Years.
DL 1 Day.
2 W 2 Weeks.
HR 1 Hour.
MN Month.
QT Quarter.
WK Week.