PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-23:27:50
G10     247.9          23.5               13.3 +/-    1.55      26.9 +/-    1.55  0.130 / 0.340
G13     57.8           33.0               10.6 +/-    0.85      17.5 +/-    0.85  0.110 / 0.340
G15     96.0           58.3               13.7 +/-    0.74      15.8 +/-    0.74  0.090 / 0.190
G16     300.9          14.4                8.8 +/-    1.47      22.3 +/-    1.47  0.080 / 0.160
G18     263.8          53.2               14.3 +/-    0.83      17.4 +/-    0.83  0.060 / 0.050
G20     41.3           50.2                9.6 +/-    0.31      12.0 +/-    0.31  0.040 / 0.060
G21     329.9          58.3               11.0 +/-    0.57      12.7 +/-    0.57  0.040 / 0.060
G26     273.2          16.5               12.5 +/-    2.10      29.9 +/-    2.10  0.030 / 0.050
G29     162.8          50.7               12.6 +/-    1.78      15.8 +/-    1.78  0.040 / 0.070