PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-16:58:00
G02     349.0          77.4               11.6 +/-    0.74      11.8 +/-    0.74  0.120 / 0.090
G05     167.4          33.3               14.4 +/-    1.10      23.6 +/-    1.10  0.110 / 0.080
G06     42.4           38.3               10.1 +/-    0.71      15.0 +/-    0.71  0.030 / 0.030
G12     305.1          73.9               11.8 +/-    0.48      12.3 +/-    0.48  0.020 / 0.030
G19     79.2           23.8               10.7 +/-    1.62      21.5 +/-    1.62  0.040 / 0.070
G24     227.6          21.1               12.3 +/-    2.13      26.2 +/-    2.13  0.050 / 0.080
G25     316.2          34.9               11.8 +/-    1.64      18.8 +/-    1.64  0.100 / 0.250
G29     289.9          13.5               13.2 +/-    3.04      34.1 +/-    3.04  0.090 / 0.330