PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/23-01:12:40
G01     319.4          16.4                7.0 +/-    1.53      16.8 +/-    1.53  0.120 / 0.270
G08     257.6          14.1               11.2 +/-    1.27      28.4 +/-    1.27  0.130 / 0.200
G10     75.7           55.1                7.7 +/-    0.62       9.2 +/-    0.62  0.020 / 0.030
G11     303.7          23.4                8.5 +/-    1.15      17.2 +/-    1.15  0.030 / 0.030
G14     295.1          71.0                8.6 +/-    0.67       9.0 +/-    0.67  0.050 / 0.060
G18     100.0          30.6                9.5 +/-    0.74      16.4 +/-    0.74  0.060 / 0.050
G31     178.5          37.8               10.8 +/-    1.61      16.4 +/-    1.61  0.050 / 0.090
G32     354.8          70.2                7.4 +/-    0.46       7.8 +/-    0.46  0.060 / 0.080