PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/19-21:57:40
G10     264.6          38.1               11.8 +/-    2.03      17.8 +/-    2.03  0.040 / 0.040
G13     42.8           19.2                8.7 +/-    2.41      19.6 +/-    2.41  0.040 / 0.040
G15     62.4           51.1               10.7 +/-    0.78      13.4 +/-    0.78  0.100 / 0.410
G16     281.5          13.3                9.9 +/-    1.57      25.7 +/-    1.57  0.170 / 0.280
G20     293.5          59.2               10.9 +/-    1.30      12.5 +/-    1.30  0.030 / 0.040
G21     355.3          69.5               11.6 +/-    0.83      12.3 +/-    0.83  0.020 / 0.040
G24     123.8          12.6               11.6 +/-    3.17      30.6 +/-    3.17  0.120 / 0.430
G27     320.1          16.3               10.3 +/-    2.45      24.8 +/-    2.45  0.110 / 0.390
G29     166.7          34.2               11.2 +/-    1.50      18.1 +/-    1.50  0.110 / 0.100