PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/07-22:13:00
G10     249.9          27.7               12.7 +/-    0.83      23.4 +/-    0.83  0.040 / 0.070
G13     53.7           29.2                8.8 +/-    0.97      15.7 +/-    0.97  0.040 / 0.050
G15     88.0           57.7               10.8 +/-    0.45      12.6 +/-    0.45  0.080 / 0.140
G20     269.1          50.2               11.1 +/-    0.94      13.9 +/-    0.94  0.070 / 0.140
G21     332.3          58.9                9.6 +/-    0.64      11.1 +/-    0.64  0.070 / 0.180
G26     269.1          15.8               10.7 +/-    2.25      26.1 +/-    2.25  0.060 / 0.180
G29     163.0          50.8               11.1 +/-    0.66      13.9 +/-    0.66  0.030 / 0.040