PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-12:43:00
G01     236.2          25.8                6.5 +/-    1.94      12.6 +/-    1.94  0.060 / 0.090
G03     307.0          60.0                5.3 +/-    0.99       6.0 +/-    0.99  0.090 / 0.120
G14     72.7           35.5                5.9 +/-    0.99       9.3 +/-    0.99  0.030 / 0.030
G16     153.8          33.6                7.3 +/-    1.65      11.8 +/-    1.65  0.030 / 0.030
G18     211.5          16.2                5.5 +/-    1.69      13.3 +/-    1.69  0.090 / 0.210
G22     241.2          77.3                7.2 +/-    0.48       7.4 +/-    0.48  0.110 / 0.160
G23     300.6          33.1                3.4 +/-    1.10       5.6 +/-    1.10  0.040 / 0.040
G26     115.4          49.4                7.7 +/-    0.55       9.8 +/-    0.55  0.040 / 0.030
G31     42.0           41.3                4.8 +/-    1.14       6.9 +/-    1.14  0.050 / 0.100
G32     90.4           12.2                6.1 +/-    1.72      16.3 +/-    1.72  0.060 / 0.220