PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/25-22:27:30
G02     55.3           36.0                9.0 +/-    1.71      14.0 +/-    1.71  0.060 / 0.060
G05     65.3           64.3                9.9 +/-    0.37      10.8 +/-    0.37  0.050 / 0.060
G12     186.7          39.7               13.0 +/-    1.13      19.0 +/-    1.13  0.060 / 0.080
G13     130.6          11.7               13.0 +/-    2.36      34.9 +/-    2.36  0.080 / 0.100
G21     267.6          13.9               13.8 +/-    3.73      35.3 +/-    3.73  0.130 / 0.390
G25     245.5          55.1               11.7 +/-    1.31      13.9 +/-    1.31  0.140 / 0.530
G29     326.6          51.4               10.6 +/-    1.47      13.1 +/-    1.47  0.310 / 0.430