PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/26-01:13:10
G01     127.0          11.8                7.5 +/-    1.82      20.0 +/-    1.82  0.130 / 0.100
G07     52.6           69.5                6.3 +/-    0.42       6.7 +/-    0.42  0.100 / 0.110
G08     51.1           40.7                5.9 +/-    0.76       8.5 +/-    0.76  0.310 / 0.300
G09     179.0          37.0                8.0 +/-    1.57      12.2 +/-    1.57  0.210 / 0.270
G11     120.5          34.6                7.3 +/-    0.74      11.6 +/-    0.74  0.050 / 0.050
G13     321.5          10.8               -6.7 +/-   10.49     -18.5 +/-   10.49  0.050 / 0.050
G17     200.2          14.6                6.9 +/-    3.31      17.3 +/-    3.31  0.030 / 0.030
G28     277.4          53.5                6.7 +/-    3.41       8.1 +/-    3.41  0.030 / 0.030
G30     338.8          63.3                5.0 +/-    0.66       5.5 +/-    0.66  0.160 / 0.280