PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-15:58:00
G02     235.3          73.1               13.0 +/-    0.70      13.6 +/-    0.70  0.030 / 0.080
G05     175.8          11.8               16.1 +/-    2.22      43.3 +/-    2.22  0.050 / 0.070
G06     41.3           61.2               11.2 +/-    0.41      12.6 +/-    0.41  0.110 / 0.260
G12     321.6          50.1               10.8 +/-    1.14      13.6 +/-    1.14  0.100 / 0.310
G17     71.3           21.0               10.6 +/-    2.23      22.8 +/-    2.23  0.060 / 0.100
G19     57.4           38.0               10.9 +/-    0.88      16.4 +/-    0.88  0.070 / 0.100
G24     249.1          36.0               13.0 +/-    1.12      20.2 +/-    1.12  0.110 / 0.270
G25     316.6          13.8                8.0 +/-    1.70      20.4 +/-    1.70  0.080 / 0.240