PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-02:27:50
G01     114.3          19.1                7.6 +/-    1.67      17.0 +/-    1.67  0.030 / 0.030
G07     85.7           65.6                5.6 +/-    0.98       6.1 +/-    0.98  0.040 / 0.030
G08     43.7           28.0                2.6 +/-    1.70       4.7 +/-    1.70  0.130 / 0.130
G09     173.1          19.5                7.0 +/-    1.36      15.5 +/-    1.36  0.090 / 0.110
G11     109.1          42.7                6.2 +/-    0.90       8.6 +/-    0.90  0.080 / 0.080
G13     315.8          22.8                2.7 +/-    1.92       5.6 +/-    1.92  0.080 / 0.090
G17     201.0          27.6                5.6 +/-    1.20      10.3 +/-    1.20  0.040 / 0.080
G28     284.2          52.2                7.5 +/-    2.32       9.2 +/-    2.32  0.050 / 0.060
G30     341.0          67.7                4.1 +/-    0.55       4.4 +/-    0.55  0.110 / 0.110