PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/28-15:57:30
G02     54.4           36.9               10.9 +/-    0.53      16.7 +/-    0.53  0.030 / 0.030
G05     71.2           67.6               10.5 +/-    0.55      11.2 +/-    0.55  0.030 / 0.030
G12     184.1          37.8               11.7 +/-    1.31      17.7 +/-    1.31  0.150 / 0.360
G13     130.8          11.3               12.1 +/-   20.10      32.9 +/-   20.10  0.160 / 0.330
G21     267.1          13.2                8.9 +/-    5.99      23.1 +/-    5.99  0.040 / 0.060
G25     247.0          55.4               11.6 +/-    0.54      13.7 +/-    0.54  0.040 / 0.060
G29     324.6          48.7               11.0 +/-    1.12      14.0 +/-    1.12  0.070 / 0.110