PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-17:27:50
G01     265.3          39.9               10.0 +/-    1.19      14.6 +/-    1.19  0.040 / 0.060
G03     316.6          36.0                8.6 +/-    1.40      13.5 +/-    1.40  0.040 / 0.060
G10     132.1          13.9                9.9 +/-    0.83      25.4 +/-    0.83  0.110 / 0.280
G11     249.4          18.5               10.2 +/-    1.43      23.3 +/-    1.43  0.090 / 0.280
G14     46.8           48.6                8.2 +/-    0.79      10.5 +/-    0.79  0.030 / 0.040
G22     312.9          57.0                8.7 +/-    1.50      10.2 +/-    1.50  0.040 / 0.040
G25     49.1           15.8                7.7 +/-    1.11      18.7 +/-    1.11  0.060 / 0.070
G26     144.8          28.7               10.5 +/-    1.18      19.0 +/-    1.18  0.040 / 0.080
G31     47.8           69.4                9.0 +/-    0.49       9.6 +/-    0.49  0.140 / 0.270
G32     68.2           29.3                7.4 +/-    0.46      13.2 +/-    0.46  0.130 / 0.260