PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-12:58:00
G01     309.5          32.0                4.3 +/-    1.70       7.2 +/-    1.70  0.110 / 0.110
G10     103.1          41.0                4.1 +/-    0.76       5.8 +/-    0.76  0.080 / 0.110
G11     283.7          28.1                2.7 +/-    0.81       5.0 +/-    0.81  0.030 / 0.030
G14     352.7          68.1                2.5 +/-    0.68       2.7 +/-    0.68  0.030 / 0.030
G18     278.0          51.0                7.9 +/-    0.66       9.8 +/-    0.66  0.030 / 0.040
G20     118.8          15.9                4.8 +/-    0.89      11.7 +/-    0.89  0.030 / 0.040
G22     309.7          26.8                2.9 +/-    1.60       5.4 +/-    1.60  0.050 / 0.040
G25     83.3           15.1                5.4 +/-    2.32      13.4 +/-    2.32  0.040 / 0.040
G31     172.0          59.9                6.1 +/-    0.39       6.9 +/-    0.39  0.060 / 0.050
G32     27.1           58.0                4.1 +/-    1.22       4.8 +/-    1.22  0.050 / 0.050