PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-21:42:10
G02     51.4           40.0                8.8 +/-    0.63      12.9 +/-    0.63  0.020 / 0.040
G05     75.8           67.4               10.1 +/-    0.49      10.9 +/-    0.49  0.030 / 0.050
G12     183.9          39.9               13.0 +/-    1.11      18.9 +/-    1.11  0.040 / 0.110
G21     263.9          10.9                2.1 +/-   23.64       5.7 +/-   23.64  0.050 / 0.100
G25     251.8          56.9               11.0 +/-    0.75      12.8 +/-    0.75  0.120 / 0.530
G29     321.7          45.0               10.0 +/-    1.01      13.5 +/-    1.01  0.160 / 0.800