PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/09-11:58:00
G01     40.2           15.3                3.0 +/-    1.73       7.5 +/-    1.73  0.110 / 0.170
G06     173.4          39.5                6.4 +/-    0.83       9.5 +/-    0.83  0.130 / 0.160
G13     236.4          22.7                5.9 +/-    1.43      12.2 +/-    1.43  0.040 / 0.080
G15     272.2          12.0                3.7 +/-    1.82       9.8 +/-    1.82  0.040 / 0.070
G17     354.2          72.2                4.5 +/-    0.52       4.7 +/-    0.52  0.030 / 0.030
G19     279.8          70.7                3.9 +/-    0.60       4.1 +/-    0.60  0.030 / 0.030
G24     316.8          17.9                4.8 +/-    2.77      11.2 +/-    2.77  0.040 / 0.030
G28     63.7           52.1                3.1 +/-    0.56       3.8 +/-    0.56  0.030 / 0.040
G30     155.0          28.9                5.1 +/-    1.11       9.1 +/-    1.11  0.090 / 0.320