PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-00:27:40
G05     49.4           17.3                7.8 +/-    1.94      18.2 +/-    1.94  0.210 / 0.420
G10     238.2          13.6               12.1 +/-    1.08      31.0 +/-    1.08  0.260 / 0.390
G13     73.4           37.1               10.9 +/-    0.86      16.7 +/-    0.86  0.160 / 0.170
G15     124.1          53.6               13.9 +/-    0.56      16.8 +/-    0.56  0.110 / 0.200
G16     312.8          12.5                8.3 +/-    2.72      21.9 +/-    2.72  0.150 / 0.290
G18     247.8          43.0               12.0 +/-    1.93      16.6 +/-    1.93  0.150 / 0.300
G20     32.2           62.2                9.4 +/-    0.82      10.5 +/-    0.82  0.070 / 0.070
G21     315.3          48.8                7.7 +/-    0.76       9.8 +/-    0.76  0.050 / 0.060
G26     286.0          19.8                8.4 +/-    1.21      18.6 +/-    1.21  0.030 / 0.030
G29     157.3          66.9               12.2 +/-    0.51      13.2 +/-    0.51  0.030 / 0.030