PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/01-03:13:00
G02     55.6           35.6                8.1 +/-    1.06      12.7 +/-    1.06  0.060 / 0.040
G05     66.6           64.2                7.3 +/-    0.46       8.0 +/-    0.46  0.060 / 0.030
G12     186.2          39.1               10.8 +/-    0.96      16.0 +/-    0.96  0.040 / 0.010
G13     133.0          11.2               10.1 +/-    4.73      27.5 +/-    4.73  0.040 / 0.010
G20     215.0          18.1               13.6 +/-    1.24      31.4 +/-    1.24  0.080 / 0.210
G21     266.5          13.5               13.1 +/-    2.25      33.7 +/-    2.25  0.320 / 0.340
G25     248.3          55.4               10.3 +/-    1.66      12.2 +/-    1.66  0.200 / 0.300
G29     324.1          48.5                8.2 +/-    0.61      10.5 +/-    0.61  0.130 / 0.280