PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-14:58:00
G01     313.4          27.4                5.7 +/-    2.47      10.5 +/-    2.47  0.090 / 0.250
G10     96.4           46.2                8.2 +/-    0.83      10.9 +/-    0.83  0.110 / 0.200
G11     294.2          25.5                5.6 +/-    2.10      10.8 +/-    2.10  0.120 / 0.290
G14     329.5          70.0                7.7 +/-    0.69       8.1 +/-    0.69  0.120 / 0.230
G22     306.8          21.1                5.6 +/-    3.39      11.9 +/-    3.39  0.030 / 0.050
G25     91.1           13.8               11.0 +/-    1.46      28.2 +/-    1.46  0.030 / 0.040
G31     171.0          56.5               12.2 +/-    0.92      14.3 +/-    0.92  0.050 / 0.060
G32     27.6           57.9                7.2 +/-    0.40       8.3 +/-    0.40  0.040 / 0.060