PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-19:12:30
G10     248.4          26.6               12.0 +/-    1.76      22.6 +/-    1.76  0.040 / 0.050
G13     55.3           30.0                9.3 +/-    1.50      16.2 +/-    1.50  0.050 / 0.050
G15     92.0           58.0               10.3 +/-    0.90      11.9 +/-    0.90  0.090 / 0.120
G16     297.8          15.9                9.1 +/-    3.58      22.1 +/-    3.58  0.100 / 0.120
G20     267.7          50.1               11.0 +/-    3.37      13.8 +/-    3.37  0.040 / 0.050
G21     330.4          57.6                9.4 +/-    0.59      10.9 +/-    0.59  0.030 / 0.040
G26     270.5          16.4               10.7 +/-    5.80      25.7 +/-    5.80  0.240 / 0.430
G29     162.8          53.7               11.1 +/-    0.28      13.4 +/-    0.28  0.210 / 0.340