PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/17-02:57:40
G02     202.9          35.2                6.5 +/-    1.21      10.2 +/-    1.21  0.060 / 0.110
G06     170.2          65.3                4.6 +/-    0.49       5.0 +/-    0.49  0.060 / 0.090
G12     306.5          13.3                2.5 +/-    1.86       6.5 +/-    1.86  0.130 / 0.290
G17     37.8           47.4                3.3 +/-    2.05       4.3 +/-    2.05  0.170 / 0.170
G19     358.7          65.7                2.8 +/-    0.82       3.0 +/-    0.82  0.080 / 0.090
G24     295.4          39.9                3.7 +/-    6.10       5.4 +/-    6.10  0.060 / 0.090
G28     100.6          34.0                5.2 +/-    1.32       8.3 +/-    1.32  0.050 / 0.030