PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/26-21:57:50
G10     251.3          27.4                9.6 +/-    1.81      17.8 +/-    1.81  0.040 / 0.060
G13     52.7           29.2                8.2 +/-    1.11      14.6 +/-    1.11  0.030 / 0.060
G15     91.4           59.4                8.9 +/-    0.60      10.1 +/-    0.60  0.150 / 0.750
G16     293.1          16.0                6.3 +/-    2.87      15.2 +/-    2.87  0.180 / 0.580
G20     253.6          16.2                3.3 +/-    1.06       8.0 +/-    1.06  0.060 / 0.160
G21     333.1          59.9                7.1 +/-    0.41       8.0 +/-    0.41  0.060 / 0.160
G26     265.4          15.4               10.2 +/-    3.61      25.0 +/-    3.61  0.050 / 0.050
G29     165.5          50.4                8.1 +/-    0.96      10.2 +/-    0.96  0.040 / 0.060