PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-16:58:00
G01     254.3          36.6                8.4 +/-    1.30      13.0 +/-    1.30  0.030 / 0.040
G03     316.3          44.9                7.7 +/-    0.70      10.4 +/-    0.70  0.040 / 0.030
G11     242.4          14.2                8.2 +/-    1.92      20.8 +/-    1.92  0.040 / 0.080
G14     56.1           43.8                6.9 +/-    1.68       9.4 +/-    1.68  0.040 / 0.060
G22     306.8          65.7                8.3 +/-    0.73       9.0 +/-    0.73  0.190 / 0.200
G23     285.4          19.2                8.9 +/-    1.70      19.9 +/-    1.70  0.180 / 0.200
G25     42.2           12.1                7.1 +/-    1.24      18.8 +/-    1.24  0.030 / 0.030
G26     137.8          36.1               12.0 +/-    1.32      18.6 +/-    1.32  0.040 / 0.030
G31     41.7           60.2                7.8 +/-    0.52       8.8 +/-    0.52  0.090 / 0.160
G32     75.6           23.8                7.6 +/-    0.92      15.4 +/-    0.92  0.080 / 0.180