PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/08-20:58:10
G10     249.2          25.8               15.5 +/-    2.16      29.8 +/-    2.16  0.110 / 0.360
G13     54.9           30.6               12.1 +/-    1.88      20.9 +/-    1.88  0.150 / 0.370
G15     100.3          60.1               13.1 +/-    1.27      14.9 +/-    1.27  0.050 / 0.050
G16     296.6          15.8               10.4 +/-    1.12      25.3 +/-    1.12  0.040 / 0.050
G20     267.5          49.7               13.1 +/-    3.90      16.5 +/-    3.90  0.070 / 0.140
G21     331.7          58.9               12.5 +/-    0.36      14.3 +/-    0.36  0.100 / 0.140
G26     269.0          16.2               14.2 +/-    1.39      34.3 +/-    1.39  0.030 / 0.040
G29     164.4          52.5               14.1 +/-    0.70      17.2 +/-    0.70  0.030 / 0.030