PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/20-04:12:40
G05     51.7           10.1                3.2 +/-    1.06       9.0 +/-    1.06  0.050 / 0.070
G10     240.8          17.4               11.4 +/-    1.51      26.7 +/-    1.51  0.050 / 0.060
G13     67.3           35.4                7.5 +/-    0.66      11.9 +/-    0.66  0.090 / 0.520
G15     112.4          55.9                8.7 +/-    0.31      10.2 +/-    0.31  0.120 / 0.510
G16     307.2          14.7                5.8 +/-    3.77      14.5 +/-    3.77  0.090 / 0.300
G20     267.1          60.1                9.4 +/-    0.85      10.7 +/-    0.85  0.080 / 0.330
G21     319.4          51.2                8.3 +/-    0.94      10.3 +/-    0.94  0.140 / 0.300
G26     278.9          19.7                7.9 +/-    1.73      17.5 +/-    1.73  0.140 / 0.290
G29     160.6          65.1                7.8 +/-    0.99       8.5 +/-    0.99  0.060 / 0.120