PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/29-16:57:40
G02     55.3           37.3                7.8 +/-    0.76      11.9 +/-    0.76  0.110 / 0.380
G05     66.9           66.8                7.8 +/-    0.24       8.4 +/-    0.24  0.220 / 0.420
G12     183.3          33.8                9.0 +/-    1.89      14.6 +/-    1.89  0.060 / 0.060
G13     130.0          13.3               11.7 +/-    2.39      30.4 +/-    2.39  0.040 / 0.060
G21     269.3          15.7                6.9 +/-    1.70      16.9 +/-    1.70  0.050 / 0.090
G25     236.4          53.5                8.3 +/-    3.30      10.0 +/-    3.30  0.070 / 0.090
G29     326.2          51.3                7.8 +/-    1.19       9.6 +/-    1.19  0.040 / 0.020