PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-02:13:00
G01     126.0          10.3                0.4 +/-   36.70       1.1 +/-   36.70  0.050 / 0.050
G07     46.0           69.9                6.5 +/-    0.68       6.9 +/-    0.68  0.040 / 0.040
G08     51.3           39.8                3.9 +/-    1.14       5.6 +/-    1.14  0.050 / 0.060
G09     174.3          33.9                8.7 +/-    1.37      14.1 +/-    1.37  0.050 / 0.070
G11     125.2          34.9                8.5 +/-    0.75      13.6 +/-    0.75  0.280 / 0.460
G13     321.0          11.5               -0.8 +/-   16.32      -2.1 +/-   16.32  0.230 / 0.530
G17     198.7          13.5                6.4 +/-    3.28      16.5 +/-    3.28  0.140 / 0.090
G23     160.9          10.3                4.2 +/-    8.88      11.7 +/-    8.88  0.110 / 0.140
G28     264.9          44.4                6.4 +/-    4.21       8.7 +/-    4.21  0.060 / 0.100
G30     325.5          55.6                5.9 +/-    0.64       7.0 +/-    0.64  0.060 / 0.110