PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-02:27:50
G08     282.2          23.0                8.3 +/-    0.71      17.1 +/-    0.71  0.030 / 0.020
G10     24.9           63.1                8.0 +/-    1.21       8.9 +/-    1.21  0.020 / 0.020
G14     240.1          55.9               11.4 +/-    2.50      13.5 +/-    2.50  0.050 / 0.090
G18     73.4           47.2                9.5 +/-    0.92      12.4 +/-    0.92  0.060 / 0.110
G21     149.8          31.0                9.4 +/-    1.09      16.1 +/-    1.09  0.160 / 0.240
G24     49.8           22.3                9.4 +/-    2.95      19.5 +/-    2.95  0.200 / 0.190
G27     243.8          26.3               11.2 +/-    3.29      21.2 +/-    3.29  0.080 / 0.140
G31     182.3          13.5                9.9 +/-    0.88      25.5 +/-    0.88  0.110 / 0.120
G32     266.6          72.3               10.3 +/-    0.75      10.8 +/-    0.75  0.100 / 0.080