PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/17-02:27:50
G01     306.5          33.5                6.7 +/-    1.28      10.9 +/-    1.28  0.040 / 0.040
G10     106.2          40.7                8.9 +/-    0.70      12.9 +/-    0.70  0.050 / 0.050
G11     279.7          29.3                7.7 +/-    0.84      13.7 +/-    0.84  0.090 / 0.140
G14     1.7            66.1                7.1 +/-    0.58       7.7 +/-    0.58  0.070 / 0.140
G18     117.4          14.4                6.7 +/-    1.69      17.0 +/-    1.69  0.070 / 0.090
G22     309.6          25.6                7.0 +/-    2.33      13.4 +/-    2.33  0.070 / 0.100
G25     78.7           16.2                7.7 +/-    1.86      18.6 +/-    1.86  0.100 / 0.210
G31     170.6          63.8               10.4 +/-    0.54      11.5 +/-    0.54  0.110 / 0.190
G32     33.3           54.4                7.5 +/-    1.20       9.0 +/-    1.20  0.040 / 0.040