PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-05:12:40
G10     264.9          38.0                6.2 +/-    1.14       9.3 +/-    1.14  0.160 / 0.380
G13     42.7           19.2                3.8 +/-    1.05       8.6 +/-    1.05  0.130 / 0.290
G15     60.5           49.2                3.5 +/-    0.63       4.5 +/-    0.63  0.060 / 0.080
G16     284.4          12.6                5.9 +/-    1.63      15.6 +/-    1.63  0.060 / 0.070
G20     294.0          59.4                4.9 +/-    0.86       5.5 +/-    0.86  0.040 / 0.050
G21     1.7            70.9                4.8 +/-    0.65       5.0 +/-    0.65  0.040 / 0.050
G24     121.7          13.0                4.6 +/-    1.99      12.0 +/-    1.99  0.140 / 0.440
G27     320.2          15.9                2.5 +/-    1.37       6.1 +/-    1.37  0.150 / 0.390
G29     165.3          30.3                4.4 +/-    2.23       7.7 +/-    2.23  0.090 / 0.300