PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-09:57:30
G08     307.1          18.7                4.4 +/-    1.22      10.0 +/-    1.22  0.070 / 0.130
G10     345.8          61.7                5.4 +/-    0.62       6.1 +/-    0.62  0.120 / 0.130
G14     222.6          34.2                9.0 +/-    1.28      14.5 +/-    1.28  0.050 / 0.080
G20     82.7           22.1                3.7 +/-    1.76       7.8 +/-    1.76  0.060 / 0.080
G21     140.4          49.6                8.3 +/-    0.85      10.5 +/-    0.85  0.090 / 0.180
G24     66.0           29.0                4.7 +/-    1.32       8.4 +/-    1.32  0.110 / 0.210
G27     264.8          35.7                9.1 +/-    1.68      14.2 +/-    1.68  0.040 / 0.040
G32     231.2          60.8                8.3 +/-    1.29       9.4 +/-    1.29  0.040 / 0.050