PURPOSE: This rule defines technical terms used in Chapter 18.

1. (1) Positional accuracy of a station is the accuracy of the station related to the reference stations that are held fixed National Geodetic Survey (NGS) or other higher order stations in the process of the adjustment. Positional accuracy of a station is computed from the constrained, correctly weighted, least squares adjustment at the ninety-five percent (95%) confidence level.
2. (2) Relative accuracy is the relative position of one station with respect to another station. It is computed for all directly connected stations from the minimally constrained and the constrained correctly weighted, least squares adjustment at the ninety-five percent (95%) confidence level.
3. (3) Rural area—For purposes of this chapter, a rural area is any second, third or fourth class county according to 48.020, RSMo.
4. (4) Urban area—For purposes of this chapter, an urban area is any first class county according to 48.020, RSMo.

AUTHORITY: section 327.041, RSMo Supp. 2005.* This rule originally filed as 4 CSR 30- 18.010. Original rule filed May 3, 1994, effective Dec. 30, 1994. Amended: Filed Dec. 1, 2005, effective June 30, 2006. Moved to 20 CSR 2030-18.010, effective Aug. 28, 2006. Non-substantive change filed Oct. 21, 2015, published Dec. 31, 2015.

*Original authority: 327.041, RSMo 1969, amended 1981, 1986, 1989, 1993, 1995, 1999, 2001.