PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-21:57:30
G02     48.8           41.5                9.6 +/-    0.60      13.7 +/-    0.60  0.040 / 0.060
G05     84.9           68.5               10.6 +/-    0.58      11.3 +/-    0.58  0.040 / 0.050
G12     188.8          48.3               13.3 +/-    2.37      17.1 +/-    2.37  0.060 / 0.080
G25     261.0          57.9               11.1 +/-    1.09      12.9 +/-    1.09  0.050 / 0.110
G29     321.1          44.3                9.8 +/-    0.67      13.4 +/-    0.67  0.060 / 0.070