PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-21:12:50
G02     34.7           53.6                7.8 +/-    1.11       9.5 +/-    1.11  0.050 / 0.060
G05     132.7          64.4               10.0 +/-    0.66      11.0 +/-    0.66  0.050 / 0.050
G06     54.8           13.9                6.5 +/-    1.10      16.5 +/-    1.10  0.050 / 0.060
G12     199.0          66.6                8.0 +/-    0.24       8.7 +/-    0.24  0.050 / 0.040
G25     293.5          54.5                8.5 +/-    1.30      10.2 +/-    1.30  0.140 / 0.290
G29     309.6          31.0                8.1 +/-    0.69      13.9 +/-    0.69  0.100 / 0.200