PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-02:57:50
G08     295.3          22.0                7.2 +/-    1.77      15.1 +/-    1.77  0.110 / 0.100
G10     12.8           62.7                8.9 +/-    0.97       9.9 +/-    0.97  0.100 / 0.120
G14     229.9          46.7                9.3 +/-    2.72      12.2 +/-    2.72  0.040 / 0.030
G18     317.9          11.3               -5.2 +/-   23.39     -14.2 +/-   23.39  0.050 / 0.030
G20     66.3           52.0                8.8 +/-    1.19      10.8 +/-    1.19  0.060 / 0.080
G21     147.3          40.2               10.4 +/-    1.20      15.0 +/-    1.20  0.050 / 0.090
G24     55.7           25.4                8.8 +/-    2.43      17.0 +/-    2.43  0.110 / 0.140
G27     254.2          31.6                8.1 +/-    2.46      13.8 +/-    2.46  0.080 / 0.110
G32     245.7          67.1                8.3 +/-    0.49       8.9 +/-    0.49  0.310 / 0.420