PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/09-22:28:10
G10     260.0          35.1               12.3 +/-    2.53      19.5 +/-    2.53  0.130 / 0.340
G13     45.3           22.4                8.2 +/-    0.66      17.0 +/-    0.66  0.160 / 0.280
G15     68.3           53.6               11.1 +/-    0.44      13.4 +/-    0.44  0.140 / 0.450
G16     286.0          14.4                8.7 +/-    1.67      21.9 +/-    1.67  0.160 / 0.390
G20     285.3          56.7               12.3 +/-    0.76      14.4 +/-    0.76  0.050 / 0.040
G21     347.3          66.5                9.9 +/-    0.41      10.7 +/-    0.41  0.050 / 0.040
G26     259.2          11.2               13.2 +/-    1.42      36.0 +/-    1.42  0.070 / 0.120
G27     321.5          12.6                9.0 +/-    2.71      23.6 +/-    2.71  0.070 / 0.120
G29     165.9          38.8               13.3 +/-    0.66      19.7 +/-    0.66  0.070 / 0.220