PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/08-15:42:40
G02     249.6          74.5                9.4 +/-    0.37       9.8 +/-    0.37  0.110 / 0.160
G05     171.8          18.8               11.8 +/-    1.79      26.7 +/-    1.79  0.080 / 0.140
G06     40.1           52.4                9.6 +/-    0.42      11.8 +/-    0.42  0.040 / 0.040
G12     322.0          60.8                8.6 +/-    0.70       9.7 +/-    0.70  0.030 / 0.040
G17     75.4           18.4                8.4 +/-    0.97      19.4 +/-    0.97  0.140 / 0.230
G19     58.4           39.5                9.0 +/-    0.98      13.1 +/-    0.98  0.130 / 0.260
G24     237.7          31.6               10.0 +/-    0.85      17.0 +/-    0.85  0.060 / 0.110
G25     317.3          18.1                7.0 +/-    3.19      16.1 +/-    3.19  0.070 / 0.110