PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/30-15:27:50
G02     265.6          78.2                6.1 +/-    0.41       6.2 +/-    0.41  0.140 / 0.150
G05     169.8          22.1                7.6 +/-    2.77      15.9 +/-    2.77  0.110 / 0.170
G06     39.7           49.6                7.3 +/-    1.04       9.3 +/-    1.04  0.060 / 0.080
G12     320.4          59.9                7.8 +/-    0.92       8.9 +/-    0.92  0.050 / 0.080
G17     75.5           20.0                6.1 +/-    1.49      13.4 +/-    1.49  0.070 / 0.170
G19     65.4           32.1                6.9 +/-    1.80      11.6 +/-    1.80  0.060 / 0.170
G24     238.6          30.0                9.6 +/-    2.45      16.9 +/-    2.45  0.040 / 0.040
G25     317.2          18.0                9.1 +/-    2.99      21.0 +/-    2.99  0.030 / 0.030