PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/15-17:27:10
G02     44.4           46.3                6.7 +/-    0.50       8.8 +/-    0.50  0.030 / 0.030
G05     101.7          70.7                9.0 +/-    0.75       9.5 +/-    0.75  0.030 / 0.030
G12     185.0          46.5               10.8 +/-    1.83      14.2 +/-    1.83  0.040 / 0.070
G25     260.6          59.0               10.3 +/-    0.55      11.8 +/-    0.55  0.030 / 0.040
G29     318.2          40.4                8.5 +/-    2.14      12.4 +/-    2.14  0.050 / 0.080