PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/17-01:27:50
G01     320.4          12.9                7.9 +/-    3.24      20.8 +/-    3.24  0.130 / 0.220
G08     261.4          16.2               12.4 +/-    2.52      30.0 +/-    2.52  0.120 / 0.230
G10     68.3           57.2                9.8 +/-    0.56      11.4 +/-    0.56  0.020 / 0.030
G11     307.1          21.3                7.7 +/-    1.85      16.5 +/-    1.85  0.020 / 0.030
G14     282.0          69.7                9.7 +/-    0.81      10.3 +/-    0.81  0.050 / 0.090
G18     96.0           33.6               10.8 +/-    0.55      17.6 +/-    0.55  0.050 / 0.100
G27     227.1          12.3               13.2 +/-    5.25      34.9 +/-    5.25  0.110 / 0.440
G31     179.0          33.4               12.3 +/-    2.04      20.1 +/-    2.04  0.110 / 0.330
G32     343.4          72.5               10.1 +/-    0.34      10.6 +/-    0.34  0.030 / 0.050