PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-15:28:10
G02     260.7          77.0                5.8 +/-    0.83       6.0 +/-    0.83  0.070 / 0.160
G05     170.9          21.3                9.0 +/-    0.76      19.3 +/-    0.76  0.080 / 0.150
G06     40.1           49.6                5.1 +/-    0.64       6.4 +/-    0.64  0.030 / 0.050
G12     321.0          63.6                5.5 +/-    0.99       6.1 +/-    0.99  0.040 / 0.050
G17     77.8           16.5                6.2 +/-    1.06      14.9 +/-    1.06  0.160 / 0.260
G19     61.3           37.8                5.5 +/-    0.92       8.3 +/-    0.92  0.110 / 0.270
G24     234.9          29.6                7.1 +/-    0.82      12.5 +/-    0.82  0.060 / 0.130
G25     317.5          20.9                4.7 +/-    1.37      10.1 +/-    1.37  0.070 / 0.140