PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-00:57:30
G10     246.7          23.4               14.9 +/-    1.30      30.2 +/-    1.30  0.040 / 0.040
G13     58.1           32.3               10.2 +/-    1.92      17.0 +/-    1.92  0.040 / 0.050
G15     99.9           58.5               13.0 +/-    0.97      15.0 +/-    0.97  0.060 / 0.130
G16     299.0          15.9                7.5 +/-    1.89      18.2 +/-    1.89  0.050 / 0.150
G20     257.9          37.0               11.1 +/-    3.43      16.9 +/-    3.43  0.140 / 0.380
G21     327.2          56.3               11.4 +/-    0.46      13.4 +/-    0.46  0.130 / 0.310
G26     270.8          17.5               11.9 +/-    2.51      27.8 +/-    2.51  0.020 / 0.040
G29     163.9          56.4               13.2 +/-    0.43      15.5 +/-    0.43  0.020 / 0.040