PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-15:42:40
G01     309.5          31.3                8.0 +/-    1.97      13.6 +/-    1.97  0.080 / 0.140
G10     103.0          42.4                8.9 +/-    0.76      12.5 +/-    0.76  0.150 / 0.150
G11     288.0          26.8                6.7 +/-    1.88      12.5 +/-    1.88  0.020 / 0.030
G14     345.8          68.4                6.1 +/-    0.39       6.5 +/-    0.39  0.030 / 0.030
G22     309.0          25.1                6.2 +/-    1.72      12.1 +/-    1.72  0.080 / 0.210
G25     85.6           15.9                8.3 +/-    2.96      20.2 +/-    2.96  0.080 / 0.190
G31     167.8          62.6               10.5 +/-    0.73      11.6 +/-    0.73  0.030 / 0.050
G32     33.9           53.9                7.2 +/-    1.42       8.7 +/-    1.42  0.040 / 0.040