PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/15-15:42:50
G02     52.3           39.5                6.8 +/-    0.29      10.0 +/-    0.29  0.050 / 0.070
G05     79.7           70.1                6.5 +/-    0.40       6.8 +/-    0.40  0.050 / 0.070
G12     184.6          39.0                9.6 +/-    1.28      14.1 +/-    1.28  0.150 / 0.280
G13     133.1          10.5               -2.0 +/-   26.00      -5.6 +/-   26.00  0.120 / 0.300
G21     266.1          13.5                7.3 +/-    6.19      18.8 +/-    6.19  0.110 / 0.080
G25     242.2          56.1                8.1 +/-    0.62       9.5 +/-    0.62  0.100 / 0.070
G29     323.7          47.8                6.0 +/-    0.96       7.8 +/-    0.96  0.020 / 0.030