PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/09-23:57:40
G02     43.4           46.5                7.1 +/-    0.75       9.4 +/-    0.75  0.030 / 0.040
G05     106.8          68.8                9.1 +/-    0.58       9.7 +/-    0.58  0.030 / 0.040
G12     188.5          53.5               10.3 +/-    1.75      12.5 +/-    1.75  0.030 / 0.050
G25     276.1          58.0                9.8 +/-    1.18      11.3 +/-    1.18  0.040 / 0.060
G29     314.8          36.0               10.0 +/-    0.92      15.5 +/-    0.92  0.040 / 0.070