PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-23:42:40
G10     242.1          19.0               11.8 +/-    1.69      26.7 +/-    1.69  0.120 / 0.620
G13     64.8           34.6                9.9 +/-    0.75      15.8 +/-    0.75  0.120 / 0.690
G15     113.7          57.0               10.4 +/-    0.51      12.2 +/-    0.51  0.090 / 0.230
G16     304.9          15.4                6.6 +/-    4.50      16.4 +/-    4.50  0.140 / 0.190
G20     249.7          24.6                7.5 +/-    1.39      14.8 +/-    1.39  0.040 / 0.070
G21     320.7          52.0               10.8 +/-    0.98      13.3 +/-    0.98  0.050 / 0.070
G26     276.8          19.3                9.1 +/-    1.49      20.4 +/-    1.49  0.030 / 0.040
G29     161.5          63.5                9.5 +/-    0.96      10.5 +/-    0.96  0.020 / 0.040