PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-21:12:20
G02     52.2           39.4                7.9 +/-    1.14      11.6 +/-    1.14  0.030 / 0.030
G05     73.1           66.9                9.0 +/-    0.54       9.7 +/-    0.54  0.030 / 0.030
G12     183.4          38.3               11.2 +/-    1.01      16.8 +/-    1.01  0.030 / 0.060
G13     133.8          10.0               -4.1 +/-   21.91     -11.5 +/-   21.91  0.040 / 0.060
G25     249.1          56.4                8.4 +/-    2.66       9.9 +/-    2.66  0.050 / 0.050
G29     322.4          46.1                8.3 +/-    0.82      11.1 +/-    0.82  0.050 / 0.040