PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-23:57:40
G02     86.9           12.8                9.7 +/-    0.92      25.5 +/-    0.92  0.190 / 0.380
G05     45.3           30.3                9.0 +/-    0.61      15.6 +/-    0.61  0.130 / 0.320
G13     93.5           35.8               10.7 +/-    1.60      16.8 +/-    1.60  0.050 / 0.110
G15     142.9          41.7               13.8 +/-    1.17      19.5 +/-    1.17  0.050 / 0.090
G18     234.9          30.7               12.3 +/-    0.94      21.2 +/-    0.94  0.120 / 0.240
G20     16.3           77.3               10.2 +/-    1.10      10.5 +/-    1.10  0.110 / 0.250
G21     301.3          39.1               10.5 +/-    1.14      15.5 +/-    1.14  0.050 / 0.090
G25     201.9          18.2               15.5 +/-    5.00      35.6 +/-    5.00  0.060 / 0.090
G26     301.4          19.1                9.7 +/-    3.43      21.9 +/-    3.43  0.030 / 0.030
G29     130.1          84.0               10.0 +/-    0.49      10.1 +/-    0.49  0.030 / 0.030