AT&T Merlin II Feature Module 2 System Manual page 222

Cumulative Line Group Report (by day or hour)
G-22 CMS Reports
This report provides hour-by-hour data on a line group over a specified
period, from 2 to 93 consecutive days. Statistics can be generated for a
Cumulative Line Group Report to reflect cumulative days or cumulative
hours, for each hour that CMS is in either Day or Night Service.
Most of the column headings in this report are the same as for the daily
report; the "Time" column heading will either be "Day" or "Hour" depending
on which report has been selected. The totals under the headings will reflect
the cumulative period of time specified.
Also the Cumulative Line Group Report differs from the Daily Line Group
Report as follows:
Each line of data for a Cumulative Line Group Report by Day will be a
daily summary; the date being summarized will be in the first column of
the report.
Days for which no CMS data exists will not be included. A separate page
at the completion of the report will contain a list of dates for which no
CMS data exists.