PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/09-20:13:20
G10     256.4          32.8               15.8 +/-    1.90      26.1 +/-    1.90  0.050 / 0.050
G13     47.8           24.8               10.1 +/-    0.92      19.9 +/-    0.92  0.050 / 0.060
G15     75.6           56.3               11.6 +/-    0.31      13.6 +/-    0.31  0.070 / 0.200
G16     289.0          15.2                9.5 +/-    2.45      23.5 +/-    2.45  0.060 / 0.200
G20     280.4          55.4               13.1 +/-    1.00      15.5 +/-    1.00  0.040 / 0.050
G21     341.7          63.9               11.6 +/-    0.70      12.8 +/-    0.70  0.030 / 0.040
G26     262.2          12.8               14.9 +/-    1.85      39.0 +/-    1.85  0.180 / 0.550
G29     165.3          43.4               15.3 +/-    0.86      21.1 +/-    0.86  0.210 / 0.480