PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-05:43:00
G10     264.6          36.5                8.0 +/-    1.15      12.3 +/-    1.15  0.300 / 0.370
G13     43.1           20.3                5.4 +/-    3.49      11.8 +/-    3.49  0.200 / 0.440
G15     61.6           50.3                5.8 +/-    0.64       7.3 +/-    0.64  0.150 / 0.220
G16     280.5          12.8                6.8 +/-    1.71      17.7 +/-    1.71  0.260 / 0.150
G20     348.5          68.7                5.2 +/-    0.55       5.6 +/-    0.55  0.050 / 0.040
G21     356.7          70.3                5.9 +/-    0.69       6.3 +/-    0.69  0.040 / 0.030
G24     122.1          12.9                6.5 +/-    1.14      17.0 +/-    1.14  0.210 / 0.270
G27     319.4          17.4                6.9 +/-    1.89      16.2 +/-    1.89  0.230 / 0.230
G29     168.0          34.0                6.7 +/-    1.23      10.8 +/-    1.23  0.070 / 0.290