PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-15:28:00
G01     254.3          36.6               10.7 +/-    1.39      16.5 +/-    1.39  0.050 / 0.070
G03     316.3          45.8                9.1 +/-    0.60      12.1 +/-    0.60  0.050 / 0.070
G11     242.0          14.1               10.0 +/-    1.65      25.4 +/-    1.65  0.040 / 0.040
G14     55.5           44.4                9.3 +/-    1.16      12.6 +/-    1.16  0.030 / 0.040
G22     306.1          67.0                8.7 +/-    0.65       9.4 +/-    0.65  0.140 / 0.190
G23     285.8          20.1                8.5 +/-    1.22      18.7 +/-    1.22  0.210 / 0.270
G25     42.3           12.1                6.7 +/-    1.88      17.8 +/-    1.88  0.030 / 0.030
G31     41.8           59.6                9.2 +/-    0.48      10.5 +/-    0.48  0.030 / 0.030
G32     75.8           23.5                7.4 +/-    1.64      15.0 +/-    1.64  0.110 / 0.220