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               11.9 +/-    0.94      22.5 +/-    0.94  0.040 / 0.050
G13     55.3           30.0                8.0 +/-    1.08      14.1 +/-    1.08  0.040 / 0.060
G15     92.0           58.0               10.1 +/-    0.52      11.7 +/-    0.52  0.070 / 0.140
G16     297.8          15.9                8.4 +/-    3.65      20.5 +/-    3.65  0.060 / 0.190
G20     267.7          50.1               11.0 +/-    0.78      13.8 +/-    0.78  0.150 / 0.600
G21     330.4          57.6                8.7 +/-    0.47      10.1 +/-    0.47  0.200 / 0.580
G26     270.5          16.4               11.6 +/-    1.95      27.8 +/-    1.95  0.030 / 0.050
G29     162.8          53.7               12.8 +/-    0.80      15.4 +/-    0.80  0.030 / 0.040