PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/02-16:28:00
G02     296.8          80.1                7.7 +/-    0.53       7.8 +/-    0.53  0.060 / 0.110
G05     167.2          28.2                9.1 +/-    1.60      16.6 +/-    1.60  0.040 / 0.120
G06     41.2           42.3                6.3 +/-    0.51       8.9 +/-    0.51  0.090 / 0.150
G12     316.8          72.3                7.3 +/-    0.97       7.6 +/-    0.97  0.070 / 0.180
G17     83.1           12.3                7.3 +/-    1.87      19.4 +/-    1.87  0.030 / 0.030
G19     68.1           33.4                7.7 +/-    1.04      12.6 +/-    1.04  0.030 / 0.030
G24     230.1          25.5               10.9 +/-    1.75      21.0 +/-    1.75  0.040 / 0.060
G25     317.6          25.6                7.3 +/-    2.62      14.1 +/-    2.62  0.040 / 0.060