PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/25-21:27:40
G10     262.0          36.5               10.8 +/-    0.93      16.6 +/-    0.93  0.050 / 0.050
G13     44.1           20.9                7.9 +/-    1.46      17.0 +/-    1.46  0.050 / 0.060
G15     65.8           52.9                9.7 +/-    0.41      11.8 +/-    0.41  0.120 / 0.330
G16     283.7          14.0               10.0 +/-    1.65      25.4 +/-    1.65  0.110 / 0.360
G20     289.3          58.1                9.8 +/-    1.03      11.3 +/-    1.03  0.090 / 0.240
G21     350.7          67.8                8.2 +/-    0.63       8.8 +/-    0.63  0.150 / 0.330
G24     125.9          11.1                2.4 +/-   30.68       6.6 +/-   30.68  0.080 / 0.260
G26     257.4          10.2               11.2 +/-    2.61      31.2 +/-    2.61  0.090 / 0.310
G27     320.9          14.4                8.2 +/-    4.19      20.6 +/-    4.19  0.150 / 0.340
G29     166.4          37.0                9.6 +/-    0.91      14.7 +/-    0.91  0.120 / 0.370