PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-14:43:10
G02     61.2           30.8                8.4 +/-    1.21      14.5 +/-    1.21  0.040 / 0.030
G05     58.1           61.8                9.8 +/-    0.75      11.0 +/-    0.75  0.040 / 0.030
G12     186.0          32.6               12.2 +/-    1.11      20.3 +/-    1.11  0.140 / 0.250
G13     128.8          15.7               13.1 +/-    2.61      32.0 +/-    2.61  0.130 / 0.270
G15     162.3          13.2               14.2 +/-    3.51      36.8 +/-    3.51  0.040 / 0.050
G20     209.2          59.5               13.6 +/-    0.98      15.5 +/-    0.98  0.040 / 0.030
G21     273.4          21.3                9.0 +/-    1.62      19.3 +/-    1.62  0.060 / 0.110
G25     233.9          50.9               12.9 +/-    2.27      16.0 +/-    2.27  0.070 / 0.110
G29     334.3          60.8                8.1 +/-    0.34       9.2 +/-    0.34  0.050 / 0.060