PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/06-20:27:30
G02     52.0           39.7                8.0 +/-    1.30      11.7 +/-    1.30  0.030 / 0.030
G05     73.5           67.1                8.7 +/-    0.32       9.3 +/-    0.32  0.030 / 0.030
G12     183.0          37.9               10.1 +/-    1.25      15.2 +/-    1.25  0.240 / 0.380
G13     133.8          10.0               -2.9 +/-   22.80      -8.2 +/-   22.80  0.290 / 0.530
G21     264.8          11.5                5.4 +/-   16.99      14.5 +/-   16.99  0.040 / 0.070
G25     248.8          56.5                9.1 +/-    2.41      10.6 +/-    2.41  0.040 / 0.080
G29     322.4          46.0                7.9 +/-    0.65      10.4 +/-    0.65  0.050 / 0.060