PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-14:42:50
G01     318.5          19.2                5.7 +/-    1.38      12.8 +/-    1.38  0.110 / 0.200
G08     258.8          12.3                5.4 +/-   12.84      14.3 +/-   12.84  0.140 / 0.350
G10     82.0           52.7                7.2 +/-    0.98       8.7 +/-    0.98  0.040 / 0.040
G11     304.1          21.7                7.1 +/-    1.07      14.9 +/-    1.07  0.040 / 0.040
G14     297.3          69.9                6.4 +/-    0.54       6.8 +/-    0.54  0.060 / 0.060
G22     301.9          13.3                5.6 +/-   11.52      14.5 +/-   11.52  0.050 / 0.060
G31     174.9          44.7                8.7 +/-    0.76      11.8 +/-    0.76  0.040 / 0.040
G32     12.4           65.7                6.6 +/-    0.49       7.2 +/-    0.49  0.040 / 0.030