PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/26-21:43:00
G02     87.6           11.3               13.8 +/-    1.31      37.4 +/-    1.31  0.090 / 0.210
G05     45.1           32.3               12.7 +/-    0.63      21.2 +/-    0.63  0.100 / 0.230
G13     93.9           35.8               17.0 +/-    1.11      26.5 +/-    1.11  0.110 / 0.380
G15     140.9          42.3               20.7 +/-    1.60      28.9 +/-    1.60  0.120 / 0.340
G18     235.1          31.6               19.1 +/-    0.94      32.3 +/-    0.94  0.060 / 0.110
G20     14.1           77.8               14.8 +/-    0.91      15.1 +/-    0.91  0.070 / 0.110
G21     301.9          39.7               14.8 +/-    0.78      21.6 +/-    0.78  0.060 / 0.080
G25     202.4          18.6               23.0 +/-    2.29      52.4 +/-    2.29  0.060 / 0.090
G26     302.5          18.5               12.9 +/-    1.53      29.5 +/-    1.53  0.020 / 0.030
G29     131.3          82.6               17.2 +/-    0.96      17.3 +/-    0.96  0.020 / 0.030