PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/26-08:12:40
G10     270.9          41.2                6.2 +/-    0.81       8.9 +/-    0.81  0.030 / 0.030
G13     40.3           15.1                3.3 +/-    3.18       8.1 +/-    3.18  0.040 / 0.030
G15     55.3           45.2                4.0 +/-    1.16       5.4 +/-    1.16  0.150 / 0.230
G16     281.3          10.7                5.9 +/-    1.81      16.2 +/-    1.81  0.090 / 0.220
G20     304.7          61.8                4.1 +/-    0.68       4.6 +/-    0.68  0.160 / 0.460
G21     22.8           74.2                4.8 +/-    1.03       4.9 +/-    1.03  0.160 / 0.490
G24     116.3          16.3                4.3 +/-    2.41      10.3 +/-    2.41  0.090 / 0.070
G27     318.1          19.7                2.5 +/-    2.27       5.6 +/-    2.27  0.060 / 0.070
G29     165.0          22.4                5.4 +/-    1.47      11.3 +/-    1.47  0.160 / 0.180