PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-22:27:50
G02     57.6           35.8                7.7 +/-    1.18      12.1 +/-    1.18  0.050 / 0.070
G05     61.7           64.5                8.5 +/-    0.39       9.3 +/-    0.39  0.050 / 0.100
G12     184.2          31.5                9.3 +/-    0.99      15.8 +/-    0.99  0.260 / 0.300
G13     129.7          15.1               12.2 +/-    2.60      30.3 +/-    2.60  0.280 / 0.270
G15     165.8          10.6               -1.7 +/-   25.19      -4.7 +/-   25.19  0.050 / 0.070
G20     206.5          61.6               10.0 +/-    0.57      11.2 +/-    0.57  0.070 / 0.090
G21     270.7          17.1               10.0 +/-    1.55      23.6 +/-    1.55  0.070 / 0.080
G25     229.0          50.8                9.2 +/-    2.77      11.5 +/-    2.77  0.100 / 0.080
G29     329.4          56.1                9.1 +/-    1.02      10.7 +/-    1.02  0.040 / 0.030