PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-15:58:10
G01     308.1          32.4                7.9 +/-    2.27      13.1 +/-    2.27  0.090 / 0.290
G10     104.8          41.2                9.2 +/-    0.78      13.1 +/-    0.78  0.090 / 0.310
G11     286.0          27.0                5.7 +/-    1.22      10.6 +/-    1.22  0.030 / 0.040
G14     350.3          67.8                5.7 +/-    1.09       6.1 +/-    1.09  0.050 / 0.050
G22     309.6          26.3                3.7 +/-    2.94       7.1 +/-    2.94  0.060 / 0.150
G25     83.9           16.4                9.8 +/-    1.44      23.5 +/-    1.44  0.060 / 0.160
G31     166.5          64.4               11.0 +/-    1.32      12.1 +/-    1.32  0.040 / 0.060
G32     35.7           52.7                7.8 +/-    1.14       9.5 +/-    1.14  0.040 / 0.050