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Table 1 Geocoding Results of Self-reported Addresses before E911 Conversion.

From: Geocoding rural addresses in a community contaminated by PFOA: a comparison of methods

   TeleAtlas ArcView/NAVTEQ
Address status N Error1 N (%)2 Error1 N (%)2
Self-reported
Post-E911 Street
71 132 (75, 309) 52 (73%) 40 (17, 70) 70 (99%)
Self-reported
Pre-E911 Street
37 243 (117, 418) 34 (92%) 236 (153, 413) 29 (78%)
Total Addresses3 135 174 (81, 357) 86 (64%) 62 (25, 151) 99 (73%)
  1. 1Positional errors are presented as median distance (25th, 75th percentile) in meters between geocoded location and GPS measurements.
  2. 2Represents the number of successfully geocoded addresses and the percent (%).
  3. 3 The 26 rural route boxes and the 1 PO Box were not geocoded by either method.