PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/01-01:12:30
G08     298.5          22.8                8.3 +/-    1.02      17.1 +/-    1.02  0.030 / 0.030
G10     350.6          62.2                9.2 +/-    0.43      10.2 +/-    0.43  0.030 / 0.030
G14     224.8          42.1               12.9 +/-    2.32      18.1 +/-    2.32  0.060 / 0.050
G18     53.5           55.1                9.9 +/-    0.99      11.8 +/-    0.99  0.070 / 0.050
G21     142.1          46.2               12.3 +/-    0.59      16.3 +/-    0.59  0.050 / 0.060
G24     64.0           29.0                9.4 +/-    1.01      16.9 +/-    1.01  0.050 / 0.070
G27     260.0          34.5               12.9 +/-    2.15      20.7 +/-    2.15  0.040 / 0.050
G32     234.4          59.8               11.0 +/-    1.81      12.6 +/-    1.81  0.040 / 0.040