PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-17:58:10
G02     67.0           28.3                6.2 +/-    3.21      11.2 +/-    3.21  0.160 / 0.210
G05     48.5           53.7                6.7 +/-    1.08       8.1 +/-    1.08  0.080 / 0.190
G12     180.6          18.9               10.4 +/-    1.51      23.6 +/-    1.51  0.080 / 0.140
G13     118.2          22.8                9.0 +/-    1.78      18.6 +/-    1.78  0.080 / 0.120
G15     161.8          19.1                9.7 +/-    1.79      21.8 +/-    1.79  0.030 / 0.040
G21     280.9          24.3                6.5 +/-    2.31      13.0 +/-    2.31  0.050 / 0.050
G25     219.8          41.9                9.4 +/-    2.10      13.3 +/-    2.10  0.100 / 0.090
G29     335.7          65.3                6.8 +/-    0.64       7.4 +/-    0.64  0.090 / 0.090