Average Daily Total (ADT)
For the ADT, the program notes how many intervals of actual data there are. For example, if you 2 complete days with 15-minute intervals, this would be 192. The program then notes how many intervals there are in a day. In this example, since the data is in 15-minute intervals, there are 96 in one day. The program then divides the number of intervals in a day (96) into the total number of data intervals (192) for a figure of 2.00. The inverse to this number (1/2.00) is then used to create a factor of 0.5. The program then adds all of the data in the study (for example, 20,000) and multiplies it by the factor created (0.5). This yields the ADT. (20,000 multiplied by 0.5 equals 10,000) This formula can be used with anywhere from several weeks worth of data to an hour's worth or less. Of course, the more data you have, the more accurate the ADT will be. It is also recommended that the ADT be calculated from full days of data (midnight to midnight). If you include days where only a portion of the data has been recorded, the ADT may be less accurate.

Randy Belliveau
Superintendant
(780) 846-3306

Warren Ward
Foreman
(780) 205-0497