PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-19:58:00
G01     44.7           20.9                7.9 +/-    3.62      16.9 +/-    3.62  0.040 / 0.060
G06     177.4          29.9               11.7 +/-    1.74      20.6 +/-    1.74  0.040 / 0.050
G13     242.9          27.1               12.5 +/-    1.43      23.3 +/-    1.43  0.150 / 0.370
G15     276.5          14.4                8.8 +/-    1.75      22.2 +/-    1.75  0.120 / 0.270
G17     343.0          75.8               10.4 +/-    0.58      10.7 +/-    0.58  0.090 / 0.200
G19     258.8          65.5               10.5 +/-    0.71      11.4 +/-    0.71  0.090 / 0.180
G24     318.0          13.9                6.2 +/-    1.30      15.8 +/-    1.30  0.100 / 0.130
G28     56.0           53.4                9.1 +/-    1.66      11.0 +/-    1.66  0.120 / 0.130
G30     151.7          32.4                9.8 +/-    1.49      16.4 +/-    1.49  0.040 / 0.040