PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/16-19:12:40
G02     239.3          74.0               13.4 +/-    0.75      13.9 +/-    0.75  0.110 / 0.210
G05     171.8          15.9               20.7 +/-    1.19      50.3 +/-    1.19  0.160 / 0.150
G06     41.0           56.9               12.1 +/-    0.33      14.1 +/-    0.33  0.110 / 0.330
G12     322.5          55.0               10.3 +/-    1.44      12.3 +/-    1.44  0.150 / 0.250
G17     70.7           22.6               10.0 +/-    1.09      20.6 +/-    1.09  0.060 / 0.060
G19     54.5           41.2               11.3 +/-    0.82      16.2 +/-    0.82  0.050 / 0.060
G24     244.1          34.9               15.6 +/-    1.26      24.8 +/-    1.26  0.090 / 0.110
G25     316.6          12.3                9.6 +/-    1.74      25.5 +/-    1.74  0.070 / 0.120