PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/07-14:12:40
G02     35.0           54.2                8.9 +/-    0.47      10.7 +/-    0.47  0.030 / 0.040
G05     142.1          62.0               14.0 +/-    1.62      15.6 +/-    1.62  0.030 / 0.040
G06     53.4           18.2                5.9 +/-    0.60      13.7 +/-    0.60  0.110 / 0.210
G12     201.7          67.8                7.9 +/-    0.78       8.4 +/-    0.78  0.110 / 0.200
G20     199.0          26.0               10.3 +/-    1.18      19.7 +/-    1.18  0.030 / 0.040
G25     294.6          54.9                7.9 +/-    0.47       9.4 +/-    0.47  0.030 / 0.050
G29     310.9          33.8                5.0 +/-    0.98       8.2 +/-    0.98  0.070 / 0.120