PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-14:12:50
G01     118.9          18.0                8.5 +/-    1.62      19.6 +/-    1.62  0.030 / 0.030
G07     81.0           66.5                9.0 +/-    0.59       9.7 +/-    0.59  0.030 / 0.030
G08     44.8           31.1                6.1 +/-    1.16      10.4 +/-    1.16  0.030 / 0.030
G09     176.0          24.5                8.4 +/-    1.48      16.6 +/-    1.48  0.030 / 0.030
G11     106.0          40.0                8.9 +/-    1.08      13.0 +/-    1.08  0.130 / 0.230
G13     317.5          19.7                6.4 +/-    2.00      14.1 +/-    2.00  0.300 / 0.260
G17     201.8          24.4               10.5 +/-    2.61      20.9 +/-    2.61  0.100 / 0.190
G18     93.8           20.9                7.7 +/-    0.96      16.6 +/-    0.96  0.120 / 0.230
G28     293.0          57.4                7.2 +/-    1.58       8.4 +/-    1.58  0.120 / 0.190
G30     345.6          68.4                8.1 +/-    0.52       8.6 +/-    0.52  0.130 / 0.160