PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-20:28:00
G02     35.7           53.7               13.0 +/-    0.39      15.8 +/-    0.39  0.050 / 0.050
G05     138.7          65.3               15.0 +/-    0.55      16.3 +/-    0.55  0.040 / 0.040
G06     57.2           11.7               10.9 +/-    1.30      29.2 +/-    1.30  0.040 / 0.050
G12     192.9          60.8               13.7 +/-    0.47      15.5 +/-    0.47  0.050 / 0.050
G20     198.5          33.1               15.8 +/-    1.30      25.9 +/-    1.30  0.030 / 0.040
G25     280.2          59.8               14.0 +/-    0.99      15.9 +/-    0.99  0.040 / 0.050
G29     312.3          34.1               11.5 +/-    1.33      18.6 +/-    1.33  0.070 / 0.110