PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-00:58:00
G10     249.7          26.0               13.1 +/-    1.65      25.1 +/-    1.65  0.040 / 0.050
G13     54.5           30.4                9.9 +/-    1.81      17.2 +/-    1.81  0.030 / 0.040
G15     92.1           58.7               12.1 +/-    1.12      13.9 +/-    1.12  0.060 / 0.140
G16     295.4          15.9                7.9 +/-    1.55      19.3 +/-    1.55  0.070 / 0.170
G20     261.0          38.5               14.0 +/-    2.52      20.9 +/-    2.52  0.130 / 0.310
G21     331.3          58.8                9.9 +/-    0.81      11.4 +/-    0.81  0.140 / 0.310
G26     267.3          16.1               11.2 +/-    2.59      27.1 +/-    2.59  0.030 / 0.030
G29     165.0          52.2               13.1 +/-    0.66      16.1 +/-    0.66  0.030 / 0.030