PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-02:28:10
G01     120.3          14.8               19.6 +/-    1.83      49.0 +/-    1.83  0.030 / 0.030
G07     67.7           68.6                6.6 +/-    0.41       7.0 +/-    0.41  0.030 / 0.030
G08     46.6           34.0                4.4 +/-    1.82       7.1 +/-    1.82  0.050 / 0.090
G09     173.9          26.5                6.7 +/-    1.07      12.7 +/-    1.07  0.040 / 0.060
G11     117.5          39.3                8.7 +/-    0.93      12.8 +/-    0.93  0.090 / 0.120
G13     318.9          17.3                6.0 +/-    2.96      14.2 +/-    2.96  0.070 / 0.090
G17     199.6          20.6                6.9 +/-    0.93      15.0 +/-    0.93  0.060 / 0.090
G28     274.2          48.6                6.7 +/-    3.16       8.6 +/-    3.16  0.060 / 0.080
G30     332.7          61.7                5.7 +/-    0.49       6.4 +/-    0.49  0.080 / 0.190