PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-13:43:10
G01     123.6          13.4                6.6 +/-    2.37      17.0 +/-    2.37  0.030 / 0.050
G07     72.4           66.1                7.8 +/-    0.46       8.4 +/-    0.46  0.040 / 0.030
G08     49.2           38.8                6.0 +/-    1.22       9.0 +/-    1.22  0.130 / 0.250
G09     178.3          33.9                8.6 +/-    1.62      14.0 +/-    1.62  0.170 / 0.160
G11     114.4          37.9                9.2 +/-    0.88      13.9 +/-    0.88  0.140 / 0.330
G13     319.8          15.3                5.1 +/-    2.89      12.5 +/-    2.89  0.140 / 0.360
G17     200.5          15.9                8.1 +/-    2.84      19.8 +/-    2.84  0.050 / 0.090
G18     99.5           18.1                7.9 +/-    1.50      18.3 +/-    1.50  0.050 / 0.090
G28     274.5          50.1                7.4 +/-    1.37       9.3 +/-    1.37  0.060 / 0.110
G30     340.2          65.1                6.1 +/-    1.12       6.7 +/-    1.12  0.050 / 0.110