PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/16-19:12:40
G10     246.0          21.9               13.8 +/-    1.65      29.0 +/-    1.65  0.150 / 0.380
G13     60.3           34.0               12.5 +/-    0.48      20.1 +/-    0.48  0.130 / 0.370
G15     97.1           57.4               13.7 +/-    0.57      16.0 +/-    0.57  0.050 / 0.060
G16     305.8          13.1                9.8 +/-    2.42      25.5 +/-    2.42  0.040 / 0.060
G18     261.8          53.1               12.7 +/-    0.59      15.5 +/-    0.59  0.050 / 0.060
G20     38.3           54.0               10.4 +/-    0.77      12.5 +/-    0.77  0.040 / 0.060
G21     330.0          58.2               11.3 +/-    0.57      13.0 +/-    0.57  0.040 / 0.100
G26     278.4          16.8               10.5 +/-    2.17      25.1 +/-    2.17  0.050 / 0.130
G29     160.3          50.5               13.8 +/-    1.11      17.3 +/-    1.11  0.150 / 0.340