PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/30-05:27:50
G10     260.5          35.1                8.5 +/-    1.45      13.5 +/-    1.45  0.030 / 0.040
G13     45.1           22.3                4.1 +/-    0.95       8.5 +/-    0.95  0.040 / 0.050
G15     65.9           52.1                5.7 +/-    0.42       7.0 +/-    0.42  0.160 / 0.230
G16     288.8          13.4                6.9 +/-    1.68      17.9 +/-    1.68  0.110 / 0.170
G20     286.4          57.3                7.6 +/-    0.84       8.8 +/-    0.84  0.080 / 0.100
G21     353.2          68.2                5.3 +/-    1.29       5.7 +/-    1.29  0.080 / 0.090
G24     125.0          10.5               -8.5 +/-   31.83     -23.5 +/-   31.83  0.140 / 0.340
G26     260.9          10.9                5.1 +/-    2.18      14.0 +/-    2.18  0.170 / 0.400
G27     321.6          12.3                3.7 +/-    4.12       9.9 +/-    4.12  0.070 / 0.270
G29     164.4          34.6                6.0 +/-    1.73       9.7 +/-    1.73  0.060 / 0.230