PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/25-14:57:30
G02     307.1          79.8                6.4 +/-    0.96       6.5 +/-    0.96  0.110 / 0.150
G05     168.4          28.6                9.4 +/-    0.69      16.9 +/-    0.69  0.110 / 0.150
G06     41.1           41.9                5.2 +/-    0.51       7.3 +/-    0.51  0.030 / 0.030
G12     314.5          71.4                5.6 +/-    0.72       5.9 +/-    0.72  0.040 / 0.030
G17     84.5           11.5                7.6 +/-    1.73      20.4 +/-    1.73  0.040 / 0.050
G19     69.7           32.6                6.9 +/-    0.56      11.5 +/-    0.56  0.040 / 0.050
G24     227.8          23.9                6.9 +/-    1.24      13.8 +/-    1.24  0.180 / 0.260
G25     317.2          28.7                3.8 +/-    1.53       6.8 +/-    1.53  0.130 / 0.300