PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-18:12:50
G02     58.9           33.4               12.1 +/-    0.46      19.8 +/-    0.46  0.120 / 0.290
G05     63.6           65.7               12.4 +/-    0.56      13.5 +/-    0.56  0.110 / 0.330
G12     185.7          33.6               14.6 +/-    1.85      23.8 +/-    1.85  0.090 / 0.100
G13     130.4          14.6               17.0 +/-    4.38      42.9 +/-    4.38  0.070 / 0.110
G15     164.2          11.3               13.5 +/-   23.21      36.5 +/-   23.21  0.040 / 0.070
G20     207.2          59.4               17.6 +/-    1.57      20.1 +/-    1.57  0.050 / 0.060
G21     271.0          18.3               13.9 +/-    1.14      31.8 +/-    1.14  0.160 / 0.450
G25     233.3          51.8               14.9 +/-    1.14      18.4 +/-    1.14  0.170 / 0.420
G29     331.6          58.0               11.8 +/-    0.65      13.6 +/-    0.65  0.040 / 0.050