PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/07/19-11:42:30 G03 192.5054 21.6095 3.9182 +/- 2.7981 8.2915 +/- 2.7981 0.030 / 0.040 G07 294.1443 41.0250 4.6135 +/- 6.3843 6.6003 +/- 6.3843 0.030 / 0.030 G08 138.2291 29.8771 4.8108 +/- 1.8672 8.4464 +/- 1.8672 0.150 / 0.400 G09 321.1234 66.0826 1.0207 +/- 4.6304 1.1056 +/- 4.6304 0.250 / 0.410 G16 42.3870 38.5665 4.0434 +/- 6.5615 6.0230 +/- 6.5615 0.060 / 0.070 G23 115.5144 79.6879 3.2107 +/- 0.4272 3.2579 +/- 0.4272 0.040 / 0.070 G26 43.5023 11.6070 -0.2431 +/- 41.0501 -0.6548 +/- 41.0501 0.050 / 0.040 G27 96.3791 34.1061 3.9608 +/- 2.5479 6.3921 +/- 2.5479 0.030 / 0.030 G30 273.5126 11.3770 0.1111 +/- 14.4883 0.3009 +/- 14.4883 0.040 / 0.080