PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/27-20:13:00
G02     333.6          78.7                9.0 +/-    0.37       9.2 +/-    0.37  0.050 / 0.030
G05     166.4          33.7               15.8 +/-    9.84      25.7 +/-    9.84  0.060 / 0.050
G06     42.7           37.6               -0.9 +/-   18.91      -1.4 +/-   18.91  0.070 / 0.080
G12     304.7          75.0                7.4 +/-    0.61       7.6 +/-    0.61  0.060 / 0.090
G19     78.8           24.0              -10.7 +/-   56.20     -21.5 +/-   56.20  0.110 / 0.120
G24     228.0          21.6               10.9 +/-    1.71      23.1 +/-    1.71  0.130 / 0.150
G25     316.1          36.0                9.1 +/-    1.33      14.1 +/-    1.33  0.040 / 0.030
G29     288.7          11.4                2.3 +/-   21.77       6.1 +/-   21.77  0.050 / 0.030