PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/16-02:57:50
G01     103.0          25.6                6.8 +/-    2.43      13.2 +/-    2.43  0.030 / 0.030
G07     108.1          57.8                6.1 +/-    0.50       7.1 +/-    0.50  0.030 / 0.030
G08     41.5           18.0                3.3 +/-    1.63       7.5 +/-    1.63  0.150 / 0.190
G11     92.3           45.7                4.6 +/-    0.76       6.2 +/-    0.76  0.120 / 0.150
G13     307.8          30.9                4.6 +/-    1.19       7.9 +/-    1.19  0.050 / 0.080
G17     204.9          39.8                7.1 +/-    0.74      10.4 +/-    0.74  0.040 / 0.070
G19     208.1          16.3                5.7 +/-    5.35      13.8 +/-    5.35  0.040 / 0.070
G28     303.4          57.1                4.3 +/-    1.26       5.0 +/-    1.26  0.050 / 0.060
G30     6.7            77.6                4.4 +/-    0.56       4.5 +/-    0.56  0.180 / 0.190