PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-09:57:40
G01     114.5          21.1                3.9 +/-    1.80       8.3 +/-    1.80  0.040 / 0.030
G07     93.7           63.0                5.5 +/-    0.59       6.1 +/-    0.59  0.030 / 0.030
G08     42.8           25.2                4.2 +/-    2.46       8.2 +/-    2.46  0.100 / 0.160
G09     173.2          16.8                4.9 +/-    3.20      11.6 +/-    3.20  0.100 / 0.160
G11     98.1           41.6                5.9 +/-    0.70       8.4 +/-    0.70  0.090 / 0.190
G13     314.7          23.7                2.3 +/-    1.50       4.6 +/-    1.50  0.060 / 0.150
G17     202.5          31.4                5.4 +/-    1.06       9.1 +/-    1.06  0.030 / 0.030
G18     87.3           22.4                3.5 +/-    1.12       7.3 +/-    1.12  0.030 / 0.040
G28     301.0          58.7                3.9 +/-    1.28       4.4 +/-    1.28  0.110 / 0.180
G30     352.8          72.0                4.8 +/-    0.62       5.0 +/-    0.62  0.110 / 0.150