PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-06:57:50
G01     99.5           29.0                6.9 +/-    1.12      12.4 +/-    1.12  0.080 / 0.050
G07     117.0          51.6                6.1 +/-    0.57       7.6 +/-    0.57  0.070 / 0.080
G08     41.7           13.5                2.0 +/-    3.19       5.3 +/-    3.19  0.030 / 0.040
G11     79.1           41.5                4.1 +/-    0.84       5.8 +/-    0.84  0.030 / 0.040
G13     304.6          31.5                3.7 +/-    1.57       6.3 +/-    1.57  0.040 / 0.050
G17     209.0          46.8                6.4 +/-    0.76       8.5 +/-    0.76  0.030 / 0.040
G19     211.1          20.8                5.3 +/-    2.17      11.4 +/-    2.17  0.120 / 0.360
G28     334.0          61.8                2.4 +/-    0.64       2.7 +/-    0.64  0.220 / 0.400
G30     66.0           79.2                3.4 +/-    0.63       3.4 +/-    0.63  0.070 / 0.120