PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/22-10:13:10
G10     265.8          38.2                5.8 +/-    1.89       8.7 +/-    1.89  0.030 / 0.030
G13     42.3           18.7                4.5 +/-    3.00      10.3 +/-    3.00  0.030 / 0.040
G15     60.0           49.1                5.3 +/-    1.08       6.8 +/-    1.08  0.160 / 0.400
G16     285.0          12.0                4.8 +/-    1.43      12.9 +/-    1.43  0.140 / 0.400
G20     295.7          59.9                4.9 +/-    0.84       5.6 +/-    0.84  0.060 / 0.080
G21     14.7           72.6                5.7 +/-    0.91       6.0 +/-    0.91  0.070 / 0.080
G24     119.3          13.8                6.3 +/-    1.47      16.2 +/-    1.47  0.190 / 0.390
G27     320.2          15.8                3.4 +/-    1.85       8.3 +/-    1.85  0.170 / 0.410
G29     165.2          28.5                6.7 +/-    0.83      12.0 +/-    0.83  0.160 / 0.240