PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-02:27:40
G01     120.7          14.5               18.8 +/-    0.88      47.3 +/-    0.88  0.030 / 0.040
G07     66.4           68.7                6.1 +/-    0.43       6.5 +/-    0.43  0.030 / 0.030
G08     46.8           34.4                4.1 +/-    0.62       6.5 +/-    0.62  0.070 / 0.110
G09     173.9          27.0                7.9 +/-    1.39      14.7 +/-    1.39  0.060 / 0.100
G11     118.0          39.0                8.9 +/-    1.03      13.2 +/-    1.03  0.030 / 0.040
G13     319.1          17.0                3.2 +/-    1.71       7.5 +/-    1.71  0.030 / 0.040
G17     199.6          20.1                8.0 +/-    2.99      17.5 +/-    2.99  0.140 / 0.300
G28     273.6          48.4                6.4 +/-    1.49       8.3 +/-    1.49  0.080 / 0.240
G30     332.2          61.4                5.6 +/-    0.76       6.3 +/-    0.76  0.060 / 0.090