PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-14:27:30
G02     236.0          74.1                8.4 +/-    0.62       8.7 +/-    0.62  0.070 / 0.090
G05     174.9          12.5               10.5 +/-    2.96      27.6 +/-    2.96  0.130 / 0.140
G06     41.1           62.1                7.4 +/-    0.98       8.2 +/-    0.98  0.180 / 0.290
G12     321.4          49.5                7.9 +/-    0.86      10.0 +/-    0.86  0.080 / 0.240
G17     71.1           21.2                6.8 +/-    1.47      14.4 +/-    1.47  0.040 / 0.040
G19     57.2           38.1                6.7 +/-    0.52      10.1 +/-    0.52  0.030 / 0.070
G24     249.1          36.0                9.0 +/-    1.00      14.1 +/-    1.00  0.030 / 0.030
G25     316.6          13.0                6.5 +/-    0.99      17.0 +/-    0.99  0.040 / 0.030