43The X9 Download tool allows you to submit jobs toalternative services like AUSPOS and RTX. Typically thesealternative services closely match OPUS.If you submit an observation to OPUS and nothing comesback, check your SPAM folder. OPUS solutions are regularlymisidentified as spam.OPUS is sometimes unavailable or takes longer than othertimes.Interpreting OPUS ResultsWhen you receive an OPUS solution by email from the NGS,it will look something like this:USER: ms@igage.com DATE: May 06, 2014RINEX FILE: p4490900.14o TIME: 16:08:35 UTCSOFTWARE: page5 1209.04 master93.pl 022814 START: 2014/03/31 00:00:00EPHEMERIS: igs17861.eph [precise] STOP: 2014/03/31 23:59:00NAV FILE: brdc0900.14n OBS USED: 45735 / 47174 :97%ANT NAME: TRM29659.00 SCIT # FIXED AMB: 162 / 171 :95%ARP HEIGHT: 0.0083 OVERALL RMS: 0.011(m)REF FRAME: NAD_83(2011)(EPOCH:2010.0000) IGS08(EPOCH:2014.2452)X: -2184137.494(m) 0.003(m) -2184138.362(m) 0.003(m)Y: -3839941.381(m) 0.001(m) -3839940.177(m) 0.001(m)Z: 4585410.516(m) 0.005(m) 4585410.529(m) 0.005(m)LAT: 46 15 35.23578 0.005(m) 46 15 35.25052 0.005(m)E LON: 240 22 8.47069 0.002(m) 240 22 8.40767 0.002(m)W LON: 119 37 51.52931 0.002(m) 119 37 51.59233 0.002(m)EL HGT: 208.861(m) 0.003(m) 208.444(m) 0.003(m)ORTHO HGT: 230.163(m) 0.018(m) [NAVD88 (Computed using GEOID12A)]UTM COORDINATES STATE PLANE COORDINATESUTM (Zone 11) SPC (4602 WA S)Northing (Y) [meters] 5126276.950 103343.987Easting (X) [meters] 297235.684 566995.383Convergence [degrees] -1.90148112 0.63125220Point Scale 1.00010542 0.99993063Combined Factor 1.00007268 0.99989789Here are some general rules to help judge the quality of asolution:The orbit [precise] should be precise or rapid (not-ultra rapid.)> 90% observations used or > 80% # Fixed Ambiguities> 50% Fixed Ambiguities or > 95% observations usedOverall RMS < 0.030(m)Lat / Lon RMS < 0.030(m)