PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/06-16:27:50
G02     35.5           53.7               16.9 +/-    0.42      20.4 +/-    0.42  0.040 / 0.040
G05     142.6          63.0               21.7 +/-    1.00      24.0 +/-    1.00  0.040 / 0.050
G06     54.9           15.5               14.5 +/-    1.34      35.6 +/-    1.34  0.040 / 0.050
G12     198.3          65.5               16.9 +/-    1.50      18.4 +/-    1.50  0.040 / 0.050
G20     198.8          28.7               22.2 +/-    1.19      40.0 +/-    1.19  0.080 / 0.190
G25     290.1          56.8               16.7 +/-    0.36      19.5 +/-    0.36  0.100 / 0.140
G29     311.6          34.1               13.0 +/-    1.19      21.0 +/-    1.19  0.040 / 0.040