PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/21-22:12:30
G10     249.2          25.7               12.7 +/-    1.57      24.4 +/-    1.57  0.040 / 0.050
G13     54.9           30.6                8.6 +/-    1.59      14.8 +/-    1.59  0.040 / 0.050
G15     96.4           59.4                9.7 +/-    0.77      11.0 +/-    0.77  0.140 / 0.340
G16     295.6          16.2                7.8 +/-    1.69      18.7 +/-    1.69  0.130 / 0.340
G20     252.6          17.1                5.7 +/-    3.70      13.6 +/-    3.70  0.110 / 0.140
G21     330.3          58.2                8.5 +/-    0.47       9.8 +/-    0.47  0.060 / 0.160
G26     267.7          16.4               11.8 +/-    1.75      28.4 +/-    1.75  0.030 / 0.040
G29     164.8          53.1                9.8 +/-    0.54      11.9 +/-    0.54  0.030 / 0.040