PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-07:42:30
G05     49.1           15.4                2.7 +/-    2.13       6.6 +/-    2.13  0.220 / 0.380
G10     236.5          13.9                3.8 +/-    4.84       9.8 +/-    4.84  0.250 / 0.340
G13     74.3           35.7                5.0 +/-    0.76       7.8 +/-    0.76  0.160 / 0.490
G15     121.5          52.9                6.2 +/-    0.49       7.5 +/-    0.49  0.200 / 0.450
G20     249.0          37.8                6.9 +/-    1.78      10.4 +/-    1.78  0.030 / 0.040
G21     317.5          50.3                2.5 +/-    0.56       3.2 +/-    0.56  0.030 / 0.050
G26     291.3          18.6                5.3 +/-    1.57      12.1 +/-    1.57  0.060 / 0.070
G29     150.9          65.7                7.8 +/-    0.83       8.5 +/-    0.83  0.050 / 0.070