PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/09-11:57:50
G01     40.2           15.3                2.4 +/-    2.12       6.0 +/-    2.12  0.160 / 0.220
G06     173.4          39.5                6.0 +/-    0.80       8.8 +/-    0.80  0.210 / 0.150
G13     236.4          22.7                6.2 +/-    1.41      12.8 +/-    1.41  0.030 / 0.020
G15     272.2          12.0                5.1 +/-    2.40      13.8 +/-    2.40  0.020 / 0.030
G17     354.2          72.2                5.4 +/-    1.01       5.6 +/-    1.01  0.030 / 0.030
G19     279.8          70.7                4.2 +/-    0.94       4.4 +/-    0.94  0.040 / 0.030
G24     316.8          17.9                1.8 +/-   10.88       4.2 +/-   10.88  0.180 / 0.360
G28     63.7           52.1                4.4 +/-    1.00       5.4 +/-    1.00  0.320 / 0.280
G30     155.0          28.9                6.3 +/-    0.92      11.2 +/-    0.92  0.070 / 0.050