PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-19:12:30
G02     232.8          69.8               11.6 +/-    1.14      12.3 +/-    1.14  0.110 / 0.160
G05     175.2          12.0               18.3 +/-    2.13      48.8 +/-    2.13  0.090 / 0.170
G06     41.7           60.3               11.0 +/-    0.25      12.5 +/-    0.25  0.190 / 0.460
G12     322.0          51.1               10.4 +/-    0.63      12.9 +/-    0.63  0.120 / 0.470
G17     70.9           21.3                9.6 +/-    2.06      20.4 +/-    2.06  0.030 / 0.060
G19     57.0           38.2               10.8 +/-    0.83      16.2 +/-    0.83  0.050 / 0.060
G24     249.8          36.4               12.1 +/-    0.90      18.7 +/-    0.90  0.070 / 0.110
G25     316.6          14.9                8.5 +/-    2.80      21.2 +/-    2.80  0.060 / 0.090