PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/25-17:27:40
G02     238.8          73.6               13.6 +/-    0.66      14.1 +/-    0.66  0.190 / 0.460
G05     175.5          13.0               16.6 +/-    2.45      43.3 +/-    2.45  0.130 / 0.320
G06     40.8           58.5               12.8 +/-    1.01      14.8 +/-    1.01  0.100 / 0.100
G12     321.7          52.6               14.2 +/-    0.83      17.3 +/-    0.83  0.070 / 0.090
G17     72.8           19.8               12.7 +/-    1.03      28.0 +/-    1.03  0.040 / 0.060
G19     59.3           36.8               12.6 +/-    1.07      19.4 +/-    1.07  0.050 / 0.060
G24     247.1          35.1               15.0 +/-    0.85      23.8 +/-    0.85  0.060 / 0.150
G25     317.0          16.3               12.0 +/-    3.97      29.0 +/-    3.97  0.060 / 0.130