READ TERR 1 2
! PC data
252607.385	60831.351	-49988.263	1.978881e-03	5.096555e-04	-5.096555e-04
602333.014	260885.921	-110287.839	8.648460e-04	2.243291e-04	-2.243291e-04
1072787.921	282181.591	-204924.730	3.683566e-04	1.523982e-04	-1.232018e-04