PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/21-06:42:50
G01     105.7          24.7                6.2 +/-    1.09      12.3 +/-    1.09  0.030 / 0.030
G07     106.1          57.9                6.7 +/-    0.47       7.8 +/-    0.47  0.030 / 0.030
G08     42.0           21.7                3.5 +/-    2.69       7.3 +/-    2.69  0.160 / 0.210
G09     173.5          12.9                5.4 +/-    1.07      14.2 +/-    1.07  0.170 / 0.270
G11     92.7           44.7                6.3 +/-    0.73       8.5 +/-    0.73  0.210 / 0.370
G13     309.5          29.5                4.3 +/-    1.56       7.6 +/-    1.56  0.280 / 0.380
G17     204.7          36.1                6.5 +/-    1.10      10.1 +/-    1.10  0.040 / 0.050
G19     207.7          14.4                2.0 +/-    5.99       5.0 +/-    5.99  0.060 / 0.060
G28     301.8          57.1                5.5 +/-    0.89       6.4 +/-    0.89  0.030 / 0.040
G30     6.4            76.9                5.7 +/-    1.27       5.9 +/-    1.27  0.030 / 0.040