PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-14:57:30
G01     313.4          27.4                4.9 +/-    1.87       9.0 +/-    1.87  0.140 / 0.200
G10     96.4           46.2                8.0 +/-    0.82      10.6 +/-    0.82  0.140 / 0.240
G11     294.2          25.5                5.0 +/-    2.81       9.7 +/-    2.81  0.040 / 0.040
G14     329.5          70.0                6.1 +/-    0.67       6.5 +/-    0.67  0.040 / 0.040
G22     306.8          21.1                6.1 +/-    2.49      13.0 +/-    2.49  0.130 / 0.270
G25     91.1           13.8               10.7 +/-    1.25      27.3 +/-    1.25  0.150 / 0.220
G31     171.0          56.5               11.3 +/-    0.57      13.2 +/-    0.57  0.030 / 0.030
G32     27.6           57.9                6.4 +/-    0.93       7.4 +/-    0.93  0.030 / 0.040