PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/29-19:12:30
G02     37.8           51.9               14.8 +/-    0.66      18.2 +/-    0.66  0.040 / 0.040
G05     139.4          65.9               17.4 +/-    0.85      18.9 +/-    0.85  0.030 / 0.050
G06     57.8           11.3               12.5 +/-    1.85      33.8 +/-    1.85  0.040 / 0.060
G12     193.1          60.0               15.4 +/-    0.78      17.4 +/-    0.78  0.040 / 0.060
G20     198.9          34.0               17.7 +/-    0.99      28.6 +/-    0.99  0.050 / 0.100
G25     279.2          59.5               15.7 +/-    0.78      17.9 +/-    0.78  0.040 / 0.090
G29     313.5          35.7               14.6 +/-    0.95      22.8 +/-    0.95  0.030 / 0.040