PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/26-16:28:10
G02     39.3           50.3                8.5 +/-    0.38      10.7 +/-    0.38  0.040 / 0.050
G05     123.9          68.9                8.8 +/-    0.81       9.4 +/-    0.81  0.040 / 0.050
G12     187.3          54.0               10.1 +/-    2.01      12.1 +/-    2.01  0.040 / 0.060
G25     273.5          59.4               10.1 +/-    0.87      11.5 +/-    0.87  0.040 / 0.040
G29     314.2          35.4                8.0 +/-    1.77      12.5 +/-    1.77  0.020 / 0.030