Index: trunk/BNC/bnchelp.html
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 <p><h4>F - 3. RTIGS</h4></p>
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-RTIGS is a data format and transport protocol for GPS observable. It has been definde by the Real-Time IGS Working Group (RTIGS WG). Its definition is based on the SOC format. Every RTIGS record has one of the following numbers:
+RTIGS stands for a data format and transport protocol for GPS observations. It has been defined by the Real-Time IGS Working Group (RTIGS WG). Its definition is based on the SOC format. Every RTIGS record has one of the following numbers:
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