encoding utf-8 survey lumbago_walk input lumbago_walk.th2 map lumbago_walkMP lumbago_walkSP1 endmap centreline data normal from to compass clino tape extend right calibrate compass 4.49 5 6 186.15 -0.7 22.1 6 7 122.31 0.9 14.38 endcentreline endsurvey