PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/31-15:58:10
G02     62.8           29.6               10.1 +/-    1.46      17.9 +/-    1.46  0.050 / 0.040
G05     55.5           60.5               11.8 +/-    0.79      13.4 +/-    0.79  0.040 / 0.040
G12     185.3          29.9               11.5 +/-    0.89      20.2 +/-    0.89  0.090 / 0.280
G13     127.0          17.4               12.9 +/-    2.06      30.3 +/-    2.06  0.120 / 0.270
G15     161.3          15.0               13.2 +/-    2.77      32.8 +/-    2.77  0.040 / 0.050
G20     210.4          62.8               16.1 +/-    1.07      17.9 +/-    1.07  0.040 / 0.050
G21     275.0          22.0               11.0 +/-    2.46      23.1 +/-    2.46  0.090 / 0.150
G25     229.9          49.0               15.1 +/-    1.22      19.3 +/-    1.22  0.080 / 0.110
G29     337.3          63.8               11.4 +/-    0.79      12.5 +/-    0.79  0.060 / 0.300