PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/28-16:12:40
G02     63.4           29.2                9.9 +/-    0.93      17.6 +/-    0.93  0.030 / 0.040
G05     54.7           59.9               11.2 +/-    0.97      12.8 +/-    0.97  0.030 / 0.040
G12     185.2          29.1               13.3 +/-    3.12      23.8 +/-    3.12  0.090 / 0.310
G13     126.5          17.9               13.7 +/-    1.83      31.8 +/-    1.83  0.110 / 0.210
G15     160.9          15.5               16.1 +/-    2.60      39.4 +/-    2.60  0.030 / 0.040
G20     210.8          63.8               15.2 +/-    1.05      16.8 +/-    1.05  0.040 / 0.050
G21     275.6          22.4               10.0 +/-    1.49      20.7 +/-    1.49  0.100 / 0.110
G25     228.8          48.3               14.8 +/-    0.89      19.1 +/-    0.89  0.050 / 0.110
G29     337.8          64.4               11.7 +/-    0.68      12.8 +/-    0.68  0.050 / 0.070