PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/16-02:12:30
G01     121.6          13.8                7.6 +/-    2.21      19.5 +/-    2.21  0.030 / 0.030
G07     62.7           69.1                4.4 +/-    0.67       4.7 +/-    0.67  0.040 / 0.040
G08     47.5           35.3                4.0 +/-    0.68       6.3 +/-    0.68  0.080 / 0.060
G09     173.9          28.1                6.5 +/-    1.33      11.9 +/-    1.33  0.060 / 0.050
G11     119.6          38.3                6.8 +/-    1.09      10.2 +/-    1.09  0.060 / 0.100
G13     319.5          16.0                3.4 +/-    2.13       8.2 +/-    2.13  0.060 / 0.110
G17     199.3          18.9                5.3 +/-    2.48      12.1 +/-    2.48  0.050 / 0.090
G28     271.9          47.6                4.8 +/-    2.18       6.2 +/-    2.18  0.080 / 0.130
G30     330.8          60.3                3.5 +/-    0.52       3.9 +/-    0.52  0.120 / 0.340