[CTPP] Rounding and Totalling in CTPP Part 1 Data

All: Has anyone else noticed that the values for counts in the CTPP Part 1 data always seem to be rounded to multiples of 5 (except for 5 itself, which usually seems to be 4)? Also, it seems that the total for a variable rarely is the sum of the other values for that variable. For example: - If you add up the individual means of transportation, only coincidentally will they add up to the total of all means of transportation, using the Both Sexes fields in Table 1-002 - When you look at the same data in SF 3, the values are close but different, clearly not rounded to multiples of 5 and definitely adding up to the expected total (in this case, All Workers) Peter ---------------------------------------------------------------- Peter Van Demark Director of GIS Products and Training Phone: 617-527-4700 Caliper Corporation Fax: 617-527-5113 1172 Beacon Street E-mail: peter(a)caliper.com Newton MA 02461-9926 Web site: http://www.caliper.com