PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-17:28:00
G01     240.1          28.7                8.5 +/-    1.46      15.2 +/-    1.46  0.050 / 0.040
G03     310.3          57.8                7.5 +/-    1.58       8.7 +/-    1.58  0.040 / 0.040
G14     70.1           35.8                8.0 +/-    1.77      12.5 +/-    1.77  0.050 / 0.110
G16     158.1          28.3               11.5 +/-    1.64      20.9 +/-    1.64  0.070 / 0.100
G22     274.7          75.6                8.3 +/-    0.41       8.5 +/-    0.41  0.100 / 0.150
G23     295.6          27.5                7.3 +/-    1.52      13.4 +/-    1.52  0.100 / 0.130
G26     123.5          46.5               11.6 +/-    0.57      15.3 +/-    0.57  0.060 / 0.040
G31     40.8           46.7                6.5 +/-    0.80       8.5 +/-    0.80  0.040 / 0.060
G32     86.7           15.5                8.7 +/-    1.61      21.3 +/-    1.61  0.070 / 0.190