PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-08:27:50
G01     126.1          10.9               -8.2 +/-   34.01     -22.5 +/-   34.01  0.060 / 0.090
G07     55.8           68.8                5.2 +/-    0.74       5.6 +/-    0.74  0.060 / 0.100
G08     52.8           42.7                3.2 +/-    0.55       4.5 +/-    0.55  0.020 / 0.030
G09     177.4          36.6                7.1 +/-    1.02      10.9 +/-    1.02  0.030 / 0.040
G11     120.8          35.8                7.2 +/-    0.71      11.3 +/-    0.71  0.210 / 0.300
G13     320.8          12.2                1.3 +/-    3.15       3.5 +/-    3.15  0.110 / 0.270
G17     200.0          11.8                2.2 +/-   11.11       5.9 +/-   11.11  0.120 / 0.430
G18     103.7          16.3                5.4 +/-    0.87      12.9 +/-    0.87  0.120 / 0.340
G28     267.7          46.6                6.8 +/-    1.10       9.0 +/-    1.10  0.050 / 0.090
G30     329.8          58.9                3.4 +/-    0.85       3.9 +/-    0.85  0.050 / 0.080