PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/19-07:12:40
G01     95.1           29.2                3.5 +/-    1.12       6.3 +/-    1.12  0.030 / 0.030
G07     119.2          49.9                6.6 +/-    0.79       8.3 +/-    0.79  0.030 / 0.030
G08     41.7           13.4                0.0 +/-    1.79       0.0 +/-    1.79  0.040 / 0.070
G11     78.2           44.1                5.1 +/-    0.48       6.9 +/-    0.48  0.050 / 0.080
G13     300.3          35.0                4.2 +/-    0.99       6.6 +/-    0.99  0.060 / 0.120
G17     209.4          46.4                5.3 +/-    0.60       7.0 +/-    0.60  0.080 / 0.150
G19     210.8          23.6                5.1 +/-    1.37      10.3 +/-    1.37  0.030 / 0.050
G28     320.2          59.9                3.8 +/-    0.80       4.3 +/-    0.80  0.030 / 0.050
G30     61.3           81.1                4.7 +/-    1.04       4.8 +/-    1.04  0.040 / 0.060