'Data for two-point ray tracing' 102 -3 0 -1 0.001 0.005 / (ISRFR,ISRFX,ISRFY,NREC,XERR,AERR) 'qi-rec.dat' 0.7 0.0 1.7 0.0 0 0 1 0 1 / / /