PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/14-16:27:30
G02     43.6           46.0                7.0 +/-    0.75       9.3 +/-    0.75  0.050 / 0.050
G05     107.8          70.2                7.8 +/-    0.75       8.2 +/-    0.75  0.070 / 0.080
G12     187.6          51.8                9.7 +/-    1.11      12.0 +/-    1.11  0.040 / 0.040
G25     271.9          58.1               10.3 +/-    0.93      11.9 +/-    0.93  0.040 / 0.040
G29     316.6          38.5                7.4 +/-    1.13      11.1 +/-    1.13  0.060 / 0.050