A longstanding bug in error modeling fixed.

The guard controllong DOP computation wasn't right.  The result was
that x/y error estimates were computed much less often than they
should have been.

1 files changed, 9 insertions, 9 deletions

diff --git a/test/daemon/gpslim236.log.chk b/test/daemon/gpslim236.log.chk
index d85555d8..6fca381e 100644
--- a/test/daemon/gpslim236.log.chk
+++ b/test/daemon/gpslim236.log.chk
@@ -5,7 +5,7 @@ $GPGSA,A,3,14,01,30,06,09,,,,,,,,2.8,1.7,2.2*36
 $GPGSV,3,1,11,30,79,308,20,05,54,079,16,06,43,204,29,14,39,247,41*75
 $GPGSV,3,2,11,01,31,303,31,02,28,077,20,25,17,309,,09,17,138,25*7A
 $GPGSV,3,3,11,04,14,040,,24,02,020,,20,00,342,*4D
-{"class":"SKY","tag":"GSV","vdop":2.20,"hdop":1.70,"pdop":2.80,"satellites":[{"PRN":30,"el":79,"az":308,"ss":20,"used":true},{"PRN":5,"el":54,"az":79,"ss":16,"used":false},{"PRN":6,"el":43,"az":204,"ss":29,"used":true},{"PRN":14,"el":39,"az":247,"ss":41,"used":true},{"PRN":1,"el":31,"az":303,"ss":31,"used":true},{"PRN":2,"el":28,"az":77,"ss":20,"used":false},{"PRN":25,"el":17,"az":309,"ss":0,"used":false},{"PRN":9,"el":17,"az":138,"ss":25,"used":true},{"PRN":4,"el":14,"az":40,"ss":0,"used":false},{"PRN":24,"el":2,"az":20,"ss":0,"used":false},{"PRN":20,"el":0,"az":342,"ss":0,"used":false}]}

+{"class":"SKY","tag":"GSV","xdop":1.21,"ydop":1.14,"vdop":2.20,"tdop":2.85,"hdop":1.70,"gdop":4.89,"pdop":2.80,"satellites":[{"PRN":30,"el":79,"az":308,"ss":20,"used":true},{"PRN":5,"el":54,"az":79,"ss":16,"used":false},{"PRN":6,"el":43,"az":204,"ss":29,"used":true},{"PRN":14,"el":39,"az":247,"ss":41,"used":true},{"PRN":1,"el":31,"az":303,"ss":31,"used":true},{"PRN":2,"el":28,"az":77,"ss":20,"used":false},{"PRN":25,"el":17,"az":309,"ss":0,"used":false},{"PRN":9,"el":17,"az":138,"ss":25,"used":true},{"PRN":4,"el":14,"az":40,"ss":0,"used":false},{"PRN":24,"el":2,"az":20,"ss":0,"used":false},{"PRN":20,"el":0,"az":342,"ss":0,"used":false}]}

 $GPRMC,185244.000,A,4854.2575,N,00219.9816,E,0.00,296.61,210706,,,A*6C
 {"class":"TPV","tag":"RMC","time":1153507964.000,"ept":0.005,"lat":48.904291667,"lon":2.333026667,"alt":124.400,"epx":18.222,"epy":17.174,"epv":50.600,"track":296.6100,"speed":0.000,"mode":3}

 $GPVTG,296.61,T,,M,0.00,N,0.0,K,A*07
@@ -30,7 +30,7 @@ $GPGSA,A,3,14,01,30,06,09,,,,,,,,2.8,1.7,2.2*36
 $GPGSV,3,1,11,30,79,308,22,05,54,079,16,06,43,204,28,14,39,247,41*76
 $GPGSV,3,2,11,01,31,303,31,02,28,077,21,25,17,309,07,09,17,138,25*7C
 $GPGSV,3,3,11,04,14,040,15,24,02,020,17,20,00,342,13*4D
-{"class":"SKY","tag":"GSV","vdop":2.20,"hdop":1.70,"pdop":2.80,"satellites":[{"PRN":30,"el":79,"az":308,"ss":22,"used":true},{"PRN":5,"el":54,"az":79,"ss":16,"used":false},{"PRN":6,"el":43,"az":204,"ss":28,"used":true},{"PRN":14,"el":39,"az":247,"ss":41,"used":true},{"PRN":1,"el":31,"az":303,"ss":31,"used":true},{"PRN":2,"el":28,"az":77,"ss":21,"used":false},{"PRN":25,"el":17,"az":309,"ss":7,"used":false},{"PRN":9,"el":17,"az":138,"ss":25,"used":true},{"PRN":4,"el":14,"az":40,"ss":15,"used":false},{"PRN":24,"el":2,"az":20,"ss":17,"used":false},{"PRN":20,"el":0,"az":342,"ss":13,"used":false}]}

+{"class":"SKY","tag":"GSV","xdop":1.21,"ydop":1.14,"vdop":2.20,"tdop":2.85,"hdop":1.70,"gdop":4.89,"pdop":2.80,"satellites":[{"PRN":30,"el":79,"az":308,"ss":22,"used":true},{"PRN":5,"el":54,"az":79,"ss":16,"used":false},{"PRN":6,"el":43,"az":204,"ss":28,"used":true},{"PRN":14,"el":39,"az":247,"ss":41,"used":true},{"PRN":1,"el":31,"az":303,"ss":31,"used":true},{"PRN":2,"el":28,"az":77,"ss":21,"used":false},{"PRN":25,"el":17,"az":309,"ss":7,"used":false},{"PRN":9,"el":17,"az":138,"ss":25,"used":true},{"PRN":4,"el":14,"az":40,"ss":15,"used":false},{"PRN":24,"el":2,"az":20,"ss":17,"used":false},{"PRN":20,"el":0,"az":342,"ss":13,"used":false}]}

 $GPRMC,185249.000,A,4854.2572,N,00219.9810,E,0.00,296.61,210706,,,A*60
 {"class":"TPV","tag":"RMC","time":1153507969.000,"ept":0.005,"lat":48.904286667,"lon":2.333016667,"alt":123.000,"epx":18.222,"epy":17.174,"epv":50.600,"track":296.6100,"speed":0.000,"climb":-0.600,"eps":36.44,"mode":3}

 $GPVTG,296.61,T,,M,0.00,N,0.0,K,A*07
@@ -55,7 +55,7 @@ $GPGSA,A,3,14,01,30,06,09,,,,,,,,2.8,1.7,2.2*36
 $GPGSV,3,1,11,30,79,308,23,05,54,079,17,06,43,204,28,14,39,247,40*77
 $GPGSV,3,2,11,01,31,303,31,02,28,077,20,25,17,309,11,09,17,138,25*7A
 $GPGSV,3,3,11,04,14,040,08,24,02,020,11,20,00,342,*45
-{"class":"SKY","tag":"GSV","vdop":2.20,"hdop":1.70,"pdop":2.80,"satellites":[{"PRN":30,"el":79,"az":308,"ss":23,"used":true},{"PRN":5,"el":54,"az":79,"ss":17,"used":false},{"PRN":6,"el":43,"az":204,"ss":28,"used":true},{"PRN":14,"el":39,"az":247,"ss":40,"used":true},{"PRN":1,"el":31,"az":303,"ss":31,"used":true},{"PRN":2,"el":28,"az":77,"ss":20,"used":false},{"PRN":25,"el":17,"az":309,"ss":11,"used":false},{"PRN":9,"el":17,"az":138,"ss":25,"used":true},{"PRN":4,"el":14,"az":40,"ss":8,"used":false},{"PRN":24,"el":2,"az":20,"ss":11,"used":false},{"PRN":20,"el":0,"az":342,"ss":0,"used":false}]}

+{"class":"SKY","tag":"GSV","xdop":1.21,"ydop":1.14,"vdop":2.20,"tdop":2.85,"hdop":1.70,"gdop":4.89,"pdop":2.80,"satellites":[{"PRN":30,"el":79,"az":308,"ss":23,"used":true},{"PRN":5,"el":54,"az":79,"ss":17,"used":false},{"PRN":6,"el":43,"az":204,"ss":28,"used":true},{"PRN":14,"el":39,"az":247,"ss":40,"used":true},{"PRN":1,"el":31,"az":303,"ss":31,"used":true},{"PRN":2,"el":28,"az":77,"ss":20,"used":false},{"PRN":25,"el":17,"az":309,"ss":11,"used":false},{"PRN":9,"el":17,"az":138,"ss":25,"used":true},{"PRN":4,"el":14,"az":40,"ss":8,"used":false},{"PRN":24,"el":2,"az":20,"ss":11,"used":false},{"PRN":20,"el":0,"az":342,"ss":0,"used":false}]}

 $GPRMC,185254.000,A,4854.2565,N,00219.9796,E,0.00,296.61,210706,,,A*6B
 {"class":"TPV","tag":"RMC","time":1153507974.000,"ept":0.005,"lat":48.904275000,"lon":2.332993333,"alt":118.100,"epx":18.222,"epy":17.174,"epv":50.600,"track":296.6100,"speed":0.000,"climb":-3.000,"eps":36.44,"mode":3}

 $GPVTG,296.61,T,,M,0.00,N,0.0,K,A*07
@@ -80,7 +80,7 @@ $GPGSA,A,3,14,01,30,06,09,,,,,,,,2.8,1.7,2.2*36
 $GPGSV,3,1,11,30,79,308,24,05,54,079,17,06,43,204,29,14,39,247,40*71
 $GPGSV,3,2,11,01,31,303,31,02,28,077,13,25,17,309,10,09,17,138,25*7B
 $GPGSV,3,3,11,04,14,040,10,24,02,020,18,20,00,342,09*4C
-{"class":"SKY","tag":"GSV","vdop":2.20,"hdop":1.70,"pdop":2.80,"satellites":[{"PRN":30,"el":79,"az":308,"ss":24,"used":true},{"PRN":5,"el":54,"az":79,"ss":17,"used":false},{"PRN":6,"el":43,"az":204,"ss":29,"used":true},{"PRN":14,"el":39,"az":247,"ss":40,"used":true},{"PRN":1,"el":31,"az":303,"ss":31,"used":true},{"PRN":2,"el":28,"az":77,"ss":13,"used":false},{"PRN":25,"el":17,"az":309,"ss":10,"used":false},{"PRN":9,"el":17,"az":138,"ss":25,"used":true},{"PRN":4,"el":14,"az":40,"ss":10,"used":false},{"PRN":24,"el":2,"az":20,"ss":18,"used":false},{"PRN":20,"el":0,"az":342,"ss":9,"used":false}]}

+{"class":"SKY","tag":"GSV","xdop":1.21,"ydop":1.14,"vdop":2.20,"tdop":2.85,"hdop":1.70,"gdop":4.89,"pdop":2.80,"satellites":[{"PRN":30,"el":79,"az":308,"ss":24,"used":true},{"PRN":5,"el":54,"az":79,"ss":17,"used":false},{"PRN":6,"el":43,"az":204,"ss":29,"used":true},{"PRN":14,"el":39,"az":247,"ss":40,"used":true},{"PRN":1,"el":31,"az":303,"ss":31,"used":true},{"PRN":2,"el":28,"az":77,"ss":13,"used":false},{"PRN":25,"el":17,"az":309,"ss":10,"used":false},{"PRN":9,"el":17,"az":138,"ss":25,"used":true},{"PRN":4,"el":14,"az":40,"ss":10,"used":false},{"PRN":24,"el":2,"az":20,"ss":18,"used":false},{"PRN":20,"el":0,"az":342,"ss":9,"used":false}]}

 $GPRMC,185259.000,A,4854.2550,N,00219.9764,E,0.00,296.61,210706,,,A*6D
 {"class":"TPV","tag":"RMC","time":1153507979.000,"ept":0.005,"lat":48.904250000,"lon":2.332940000,"alt":105.300,"epx":18.222,"epy":17.174,"epv":50.600,"track":296.6100,"speed":0.000,"climb":-3.100,"eps":36.44,"mode":3}

 $GPVTG,296.61,T,,M,0.00,N,0.0,K,A*07
@@ -105,7 +105,7 @@ $GPGSA,A,3,14,01,30,06,09,,,,,,,,2.8,1.7,2.2*36
 $GPGSV,3,1,11,30,79,308,24,05,54,079,18,06,43,204,31,14,39,247,40*77
 $GPGSV,3,2,11,01,31,303,31,02,28,077,11,25,17,309,13,09,17,138,24*7B
 $GPGSV,3,3,11,04,14,040,10,24,02,020,07,20,00,342,12*48
-{"class":"SKY","tag":"GSV","vdop":2.20,"hdop":1.70,"pdop":2.80,"satellites":[{"PRN":30,"el":79,"az":308,"ss":24,"used":true},{"PRN":5,"el":54,"az":79,"ss":18,"used":false},{"PRN":6,"el":43,"az":204,"ss":31,"used":true},{"PRN":14,"el":39,"az":247,"ss":40,"used":true},{"PRN":1,"el":31,"az":303,"ss":31,"used":true},{"PRN":2,"el":28,"az":77,"ss":11,"used":false},{"PRN":25,"el":17,"az":309,"ss":13,"used":false},{"PRN":9,"el":17,"az":138,"ss":24,"used":true},{"PRN":4,"el":14,"az":40,"ss":10,"used":false},{"PRN":24,"el":2,"az":20,"ss":7,"used":false},{"PRN":20,"el":0,"az":342,"ss":12,"used":false}]}

+{"class":"SKY","tag":"GSV","xdop":1.21,"ydop":1.14,"vdop":2.20,"tdop":2.85,"hdop":1.70,"gdop":4.89,"pdop":2.80,"satellites":[{"PRN":30,"el":79,"az":308,"ss":24,"used":true},{"PRN":5,"el":54,"az":79,"ss":18,"used":false},{"PRN":6,"el":43,"az":204,"ss":31,"used":true},{"PRN":14,"el":39,"az":247,"ss":40,"used":true},{"PRN":1,"el":31,"az":303,"ss":31,"used":true},{"PRN":2,"el":28,"az":77,"ss":11,"used":false},{"PRN":25,"el":17,"az":309,"ss":13,"used":false},{"PRN":9,"el":17,"az":138,"ss":24,"used":true},{"PRN":4,"el":14,"az":40,"ss":10,"used":false},{"PRN":24,"el":2,"az":20,"ss":7,"used":false},{"PRN":20,"el":0,"az":342,"ss":12,"used":false}]}

 $GPRMC,185304.000,A,4854.2543,N,00219.9749,E,0.00,296.61,210706,,,A*69
 {"class":"TPV","tag":"RMC","time":1153507984.000,"ept":0.005,"lat":48.904238333,"lon":2.332915000,"alt":99.300,"epx":18.222,"epy":17.174,"epv":50.600,"track":296.6100,"speed":0.000,"climb":-0.200,"eps":36.44,"mode":3}

 $GPVTG,296.61,T,,M,0.00,N,0.0,K,A*07
@@ -130,7 +130,7 @@ $GPGSA,A,3,14,01,30,06,09,,,,,,,,2.8,1.7,2.2*36
 $GPGSV,3,1,11,30,79,308,23,05,54,079,18,06,43,204,32,14,39,247,40*73
 $GPGSV,3,2,11,01,31,303,31,02,28,077,15,25,17,309,11,09,17,138,24*7D
 $GPGSV,3,3,11,04,14,040,,24,02,020,,20,00,342,11*4D
-{"class":"SKY","tag":"GSV","vdop":2.20,"hdop":1.70,"pdop":2.80,"satellites":[{"PRN":30,"el":79,"az":308,"ss":23,"used":true},{"PRN":5,"el":54,"az":79,"ss":18,"used":false},{"PRN":6,"el":43,"az":204,"ss":32,"used":true},{"PRN":14,"el":39,"az":247,"ss":40,"used":true},{"PRN":1,"el":31,"az":303,"ss":31,"used":true},{"PRN":2,"el":28,"az":77,"ss":15,"used":false},{"PRN":25,"el":17,"az":309,"ss":11,"used":false},{"PRN":9,"el":17,"az":138,"ss":24,"used":true},{"PRN":4,"el":14,"az":40,"ss":0,"used":false},{"PRN":24,"el":2,"az":20,"ss":0,"used":false},{"PRN":20,"el":0,"az":342,"ss":11,"used":false}]}

+{"class":"SKY","tag":"GSV","xdop":1.21,"ydop":1.14,"vdop":2.20,"tdop":2.85,"hdop":1.70,"gdop":4.89,"pdop":2.80,"satellites":[{"PRN":30,"el":79,"az":308,"ss":23,"used":true},{"PRN":5,"el":54,"az":79,"ss":18,"used":false},{"PRN":6,"el":43,"az":204,"ss":32,"used":true},{"PRN":14,"el":39,"az":247,"ss":40,"used":true},{"PRN":1,"el":31,"az":303,"ss":31,"used":true},{"PRN":2,"el":28,"az":77,"ss":15,"used":false},{"PRN":25,"el":17,"az":309,"ss":11,"used":false},{"PRN":9,"el":17,"az":138,"ss":24,"used":true},{"PRN":4,"el":14,"az":40,"ss":0,"used":false},{"PRN":24,"el":2,"az":20,"ss":0,"used":false},{"PRN":20,"el":0,"az":342,"ss":11,"used":false}]}

 $GPRMC,185309.000,A,4854.2542,N,00219.9744,E,0.00,277.83,210706,,,A*6B
 {"class":"TPV","tag":"RMC","time":1153507989.000,"ept":0.005,"lat":48.904236667,"lon":2.332906667,"alt":98.400,"epx":18.222,"epy":17.174,"epv":50.600,"track":277.8300,"speed":0.000,"climb":-0.400,"eps":36.44,"mode":3}

 $GPVTG,277.83,T,,M,0.00,N,0.0,K,A*04
@@ -155,7 +155,7 @@ $GPGSA,A,3,14,01,30,06,09,,,,,,,,2.8,1.7,2.2*36
 $GPGSV,3,1,11,30,79,308,22,05,54,079,19,06,43,204,33,14,39,247,40*72
 $GPGSV,3,2,11,01,31,303,30,02,28,077,,25,17,309,08,09,17,138,23*77
 $GPGSV,3,3,11,04,14,040,14,24,02,020,09,20,00,342,08*49
-{"class":"SKY","tag":"GSV","vdop":2.20,"hdop":1.70,"pdop":2.80,"satellites":[{"PRN":30,"el":79,"az":308,"ss":22,"used":true},{"PRN":5,"el":54,"az":79,"ss":19,"used":false},{"PRN":6,"el":43,"az":204,"ss":33,"used":true},{"PRN":14,"el":39,"az":247,"ss":40,"used":true},{"PRN":1,"el":31,"az":303,"ss":30,"used":true},{"PRN":2,"el":28,"az":77,"ss":0,"used":false},{"PRN":25,"el":17,"az":309,"ss":8,"used":false},{"PRN":9,"el":17,"az":138,"ss":23,"used":true},{"PRN":4,"el":14,"az":40,"ss":14,"used":false},{"PRN":24,"el":2,"az":20,"ss":9,"used":false},{"PRN":20,"el":0,"az":342,"ss":8,"used":false}]}

+{"class":"SKY","tag":"GSV","xdop":1.21,"ydop":1.14,"vdop":2.20,"tdop":2.85,"hdop":1.70,"gdop":4.89,"pdop":2.80,"satellites":[{"PRN":30,"el":79,"az":308,"ss":22,"used":true},{"PRN":5,"el":54,"az":79,"ss":19,"used":false},{"PRN":6,"el":43,"az":204,"ss":33,"used":true},{"PRN":14,"el":39,"az":247,"ss":40,"used":true},{"PRN":1,"el":31,"az":303,"ss":30,"used":true},{"PRN":2,"el":28,"az":77,"ss":0,"used":false},{"PRN":25,"el":17,"az":309,"ss":8,"used":false},{"PRN":9,"el":17,"az":138,"ss":23,"used":true},{"PRN":4,"el":14,"az":40,"ss":14,"used":false},{"PRN":24,"el":2,"az":20,"ss":9,"used":false},{"PRN":20,"el":0,"az":342,"ss":8,"used":false}]}

 $GPRMC,185314.000,A,4854.2542,N,00219.9750,E,1.06,270.56,210706,,,A*6A
 {"class":"TPV","tag":"RMC","time":1153507994.000,"ept":0.005,"lat":48.904236667,"lon":2.332916667,"alt":98.500,"epx":18.222,"epy":17.174,"epv":50.600,"track":270.5600,"speed":0.545,"climb":0.100,"eps":36.44,"mode":3}

 $GPVTG,270.56,T,,M,1.06,N,2.0,K,A*0E
@@ -180,7 +180,7 @@ $GPGSA,A,3,14,01,30,06,09,,,,,,,,2.7,1.7,2.2*39
 $GPGSV,3,1,11,30,79,308,21,05,54,079,19,06,43,204,34,14,39,247,40*76
 $GPGSV,3,2,11,01,31,303,30,02,28,077,,25,17,309,14,09,17,138,23*7A
 $GPGSV,3,3,11,04,14,040,10,24,02,020,09,20,00,342,12*46
-{"class":"SKY","tag":"GSV","vdop":2.20,"hdop":1.70,"pdop":2.70,"satellites":[{"PRN":30,"el":79,"az":308,"ss":21,"used":true},{"PRN":5,"el":54,"az":79,"ss":19,"used":false},{"PRN":6,"el":43,"az":204,"ss":34,"used":true},{"PRN":14,"el":39,"az":247,"ss":40,"used":true},{"PRN":1,"el":31,"az":303,"ss":30,"used":true},{"PRN":2,"el":28,"az":77,"ss":0,"used":false},{"PRN":25,"el":17,"az":309,"ss":14,"used":false},{"PRN":9,"el":17,"az":138,"ss":23,"used":true},{"PRN":4,"el":14,"az":40,"ss":10,"used":false},{"PRN":24,"el":2,"az":20,"ss":9,"used":false},{"PRN":20,"el":0,"az":342,"ss":12,"used":false}]}

+{"class":"SKY","tag":"GSV","xdop":1.21,"ydop":1.14,"vdop":2.20,"tdop":2.85,"hdop":1.70,"gdop":4.89,"pdop":2.70,"satellites":[{"PRN":30,"el":79,"az":308,"ss":21,"used":true},{"PRN":5,"el":54,"az":79,"ss":19,"used":false},{"PRN":6,"el":43,"az":204,"ss":34,"used":true},{"PRN":14,"el":39,"az":247,"ss":40,"used":true},{"PRN":1,"el":31,"az":303,"ss":30,"used":true},{"PRN":2,"el":28,"az":77,"ss":0,"used":false},{"PRN":25,"el":17,"az":309,"ss":14,"used":false},{"PRN":9,"el":17,"az":138,"ss":23,"used":true},{"PRN":4,"el":14,"az":40,"ss":10,"used":false},{"PRN":24,"el":2,"az":20,"ss":9,"used":false},{"PRN":20,"el":0,"az":342,"ss":12,"used":false}]}

 $GPRMC,185319.000,A,4854.2546,N,00219.9758,E,0.00,270.56,210706,,,A*6C
 {"class":"TPV","tag":"RMC","time":1153507999.000,"ept":0.005,"lat":48.904243333,"lon":2.332930000,"alt":100.300,"epx":18.222,"epy":17.174,"epv":50.600,"track":270.5600,"speed":0.000,"climb":-0.800,"eps":36.44,"mode":3}

 $GPVTG,270.56,T,,M,0.00,N,0.0,K,A*0B
@@ -205,7 +205,7 @@ $GPGSA,A,3,14,01,30,06,09,,,,,,,,2.7,1.7,2.2*39
 $GPGSV,3,1,11,30,79,308,20,05,54,079,18,06,43,204,35,14,39,247,40*77
 $GPGSV,3,2,11,01,31,303,30,02,28,077,,25,17,309,11,09,17,138,22*7E
 $GPGSV,3,3,11,04,14,040,,24,02,020,08,20,00,342,08*4D
-{"class":"SKY","tag":"GSV","vdop":2.20,"hdop":1.70,"pdop":2.70,"satellites":[{"PRN":30,"el":79,"az":308,"ss":20,"used":true},{"PRN":5,"el":54,"az":79,"ss":18,"used":false},{"PRN":6,"el":43,"az":204,"ss":35,"used":true},{"PRN":14,"el":39,"az":247,"ss":40,"used":true},{"PRN":1,"el":31,"az":303,"ss":30,"used":true},{"PRN":2,"el":28,"az":77,"ss":0,"used":false},{"PRN":25,"el":17,"az":309,"ss":11,"used":false},{"PRN":9,"el":17,"az":138,"ss":22,"used":true},{"PRN":4,"el":14,"az":40,"ss":0,"used":false},{"PRN":24,"el":2,"az":20,"ss":8,"used":false},{"PRN":20,"el":0,"az":342,"ss":8,"used":false}]}

+{"class":"SKY","tag":"GSV","xdop":1.21,"ydop":1.14,"vdop":2.20,"tdop":2.85,"hdop":1.70,"gdop":4.89,"pdop":2.70,"satellites":[{"PRN":30,"el":79,"az":308,"ss":20,"used":true},{"PRN":5,"el":54,"az":79,"ss":18,"used":false},{"PRN":6,"el":43,"az":204,"ss":35,"used":true},{"PRN":14,"el":39,"az":247,"ss":40,"used":true},{"PRN":1,"el":31,"az":303,"ss":30,"used":true},{"PRN":2,"el":28,"az":77,"ss":0,"used":false},{"PRN":25,"el":17,"az":309,"ss":11,"used":false},{"PRN":9,"el":17,"az":138,"ss":22,"used":true},{"PRN":4,"el":14,"az":40,"ss":0,"used":false},{"PRN":24,"el":2,"az":20,"ss":8,"used":false},{"PRN":20,"el":0,"az":342,"ss":8,"used":false}]}

 $GPRMC,185324.000,A,4854.2545,N,00219.9754,E,0.00,261.85,210706,,,A*63
 {"class":"TPV","tag":"RMC","time":1153508004.000,"ept":0.005,"lat":48.904241667,"lon":2.332923333,"alt":99.500,"epx":18.222,"epy":17.174,"epv":50.600,"track":261.8500,"speed":0.000,"climb":0.000,"eps":36.44,"mode":3}

 $GPVTG,261.85,T,,M,0.00,N,0.0,K,A*05