PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/25-21:27:50
G10     262.0          36.5               10.9 +/-    1.95      16.9 +/-    1.95  0.050 / 0.040
G13     44.1           20.9                7.5 +/-    2.17      16.1 +/-    2.17  0.060 / 0.050
G15     65.8           52.9                9.0 +/-    0.54      11.0 +/-    0.54  0.190 / 0.250
G16     283.7          14.0                9.0 +/-    1.59      22.9 +/-    1.59  0.190 / 0.200
G20     289.3          58.1                9.1 +/-    1.18      10.5 +/-    1.18  0.040 / 0.050
G21     350.7          67.8                8.6 +/-    0.46       9.2 +/-    0.46  0.040 / 0.040
G24     125.9          11.1                8.5 +/-    3.98      23.1 +/-    3.98  0.190 / 0.450
G27     320.9          14.4                8.2 +/-    1.30      20.8 +/-    1.30  0.140 / 0.610
G29     166.4          37.0                9.1 +/-    0.85      14.0 +/-    0.85  0.080 / 0.080