PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-17:28:10
G02     208.5          43.9               15.6 +/-    1.33      21.3 +/-    1.33  0.050 / 0.080
G06     119.5          79.0               13.2 +/-    0.56      13.4 +/-    0.56  0.060 / 0.090
G12     314.2          25.9               11.3 +/-    3.20      21.6 +/-    3.20  0.030 / 0.060
G17     49.1           38.3               10.8 +/-    0.66      16.1 +/-    0.66  0.030 / 0.070
G19     26.7           56.0               11.6 +/-    0.43      13.7 +/-    0.43  0.080 / 0.130
G24     285.2          41.4               10.6 +/-    1.14      15.1 +/-    1.14  0.090 / 0.160
G28     113.8          22.5               11.6 +/-    1.43      24.0 +/-    1.43  0.040 / 0.080