PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/26-16:57:10
G02     50.6           41.1                9.7 +/-    0.72      13.8 +/-    0.72  0.040 / 0.070
G05     80.9           69.8               10.1 +/-    0.39      10.7 +/-    0.39  0.040 / 0.050
G12     184.2          39.6               11.1 +/-    2.14      16.3 +/-    2.14  0.040 / 0.080
G21     265.0          12.3               10.1 +/-    2.59      26.7 +/-    2.59  0.040 / 0.070
G25     246.0          56.7               11.7 +/-    0.50      13.7 +/-    0.50  0.230 / 0.670
G29     322.7          46.3                8.5 +/-    1.28      11.2 +/-    1.28  0.220 / 0.630