PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/15-17:58:00
G02     81.4           15.0               13.1 +/-    0.98      32.6 +/-    0.98  0.030 / 0.050
G05     44.5           38.5               12.3 +/-    0.34      18.3 +/-    0.34  0.030 / 0.070
G13     104.7          32.1               15.3 +/-    0.96      25.7 +/-    0.96  0.040 / 0.040
G15     146.8          35.1               16.4 +/-    1.69      26.0 +/-    1.69  0.040 / 0.050
G18     229.3          25.1               14.6 +/-    0.84      28.4 +/-    0.84  0.050 / 0.130
G20     302.6          85.6               12.0 +/-    0.47      12.1 +/-    0.47  0.060 / 0.120
G21     295.0          35.7               11.3 +/-    0.78      17.7 +/-    0.78  0.120 / 0.340
G25     209.2          27.7               14.1 +/-    2.53      25.9 +/-    2.53  0.100 / 0.320
G26     312.5          14.3                8.4 +/-    1.71      21.3 +/-    1.71  0.090 / 0.200
G29     51.0           85.1               12.9 +/-    0.44      12.9 +/-    0.44  0.080 / 0.140