PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/12-11:57:30
G10     96.5           46.0                5.0 +/-    0.90       6.7 +/-    0.90  0.050 / 0.050
G11     293.0          26.1                6.1 +/-    2.04      11.7 +/-    2.04  0.040 / 0.040
G14     324.8          69.8                4.5 +/-    0.58       4.8 +/-    0.58  0.110 / 0.290
G18     291.4          46.7                6.0 +/-    2.69       7.9 +/-    2.69  0.140 / 0.310
G22     307.5          23.5                4.2 +/-    2.11       8.5 +/-    2.11  0.120 / 0.190
G25     91.1           13.8                3.2 +/-    1.50       8.3 +/-    1.50  0.120 / 0.200
G31     169.6          57.3                6.1 +/-    0.55       7.1 +/-    0.55  0.060 / 0.100
G32     28.5           57.4                3.5 +/-    0.92       4.1 +/-    0.92  0.060 / 0.130