PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-19:43:10
G10     249.3          27.3               13.9 +/-    0.83      25.8 +/-    0.83  0.040 / 0.070
G13     54.3           29.5               11.3 +/-    0.94      20.0 +/-    0.94  0.040 / 0.060
G15     90.5           58.1               13.1 +/-    0.49      15.1 +/-    0.49  0.060 / 0.200
G16     296.9          15.9               11.4 +/-    2.95      27.8 +/-    2.95  0.060 / 0.180
G20     268.9          50.6               13.1 +/-    0.98      16.4 +/-    0.98  0.170 / 0.730
G21     331.5          58.3               12.1 +/-    0.50      14.0 +/-    0.50  0.170 / 0.740
G26     269.5          16.1               14.6 +/-    3.63      35.4 +/-    3.63  0.030 / 0.040
G29     163.1          52.4               14.6 +/-    0.61      17.8 +/-    0.61  0.030 / 0.050