PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/07-22:42:50
G10     262.6          36.8               11.2 +/-    0.84      17.2 +/-    0.84  0.160 / 0.280
G13     43.8           20.6                8.6 +/-    0.89      18.6 +/-    0.89  0.160 / 0.370
G15     64.5           52.0               10.7 +/-    0.45      13.1 +/-    0.45  0.040 / 0.040
G20     289.6          58.0               11.0 +/-    1.00      12.8 +/-    1.00  0.040 / 0.040
G21     351.8          68.3                9.5 +/-    0.65      10.2 +/-    0.65  0.130 / 0.330
G24     125.1          11.5               10.1 +/-    2.88      27.2 +/-    2.88  0.110 / 0.320
G27     320.7          14.7                6.3 +/-    3.58      15.8 +/-    3.58  0.060 / 0.070
G29     166.3          35.9               11.2 +/-    1.07      17.4 +/-    1.07  0.070 / 0.080