PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-19:12:40
G05     50.9           14.2                7.8 +/-    2.19      19.8 +/-    2.19  0.040 / 0.060
G10     240.9          18.0               10.8 +/-    3.23      25.0 +/-    3.23  0.050 / 0.060
G13     66.6           34.9                9.3 +/-    1.61      14.9 +/-    1.61  0.080 / 0.470
G15     121.0          56.2                9.9 +/-    0.51      11.7 +/-    0.51  0.090 / 0.440
G16     307.3          14.6                6.9 +/-    1.74      17.2 +/-    1.74  0.140 / 0.270
G20     255.0          42.2               11.2 +/-    2.31      15.7 +/-    2.31  0.190 / 0.210
G21     320.5          51.8                9.9 +/-    0.68      12.2 +/-    0.68  0.060 / 0.120
G26     280.1          19.3                9.4 +/-    1.16      21.0 +/-    1.16  0.060 / 0.120
G29     159.9          64.7               11.2 +/-    0.60      12.3 +/-    0.60  0.030 / 0.030