PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/23-01:12:50
G01     319.4          16.4                7.0 +/-    1.96      16.8 +/-    1.96  0.030 / 0.020
G08     257.6          14.1                8.9 +/-    2.06      22.6 +/-    2.06  0.040 / 0.030
G10     75.7           55.1                8.6 +/-    0.60      10.3 +/-    0.60  0.140 / 0.230
G11     303.7          23.4                8.6 +/-    1.37      17.3 +/-    1.37  0.140 / 0.230
G14     295.1          71.0                6.9 +/-    0.74       7.3 +/-    0.74  0.050 / 0.040
G18     100.0          30.6                8.1 +/-    0.92      13.9 +/-    0.92  0.050 / 0.050
G31     178.5          37.8               10.2 +/-    1.27      15.5 +/-    1.27  0.040 / 0.080
G32     354.8          70.2                7.5 +/-    0.40       7.9 +/-    0.40  0.040 / 0.070