PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-16:58:10
G01     125.6          12.9               14.8 +/-    2.19      38.6 +/-    2.19  0.060 / 0.060
G07     57.3           69.5               15.2 +/-    0.55      16.1 +/-    0.55  0.060 / 0.050
G08     50.0           39.8               13.2 +/-    1.09      19.3 +/-    1.09  0.030 / 0.030
G09     177.9          34.0               15.7 +/-    1.83      25.5 +/-    1.83  0.030 / 0.030
G11     117.1          36.2               14.6 +/-    0.76      22.7 +/-    0.76  0.030 / 0.030
G13     320.7          13.1               12.9 +/-    3.12      33.7 +/-    3.12  0.030 / 0.030
G17     201.1          14.5               14.1 +/-    1.59      35.5 +/-    1.59  0.180 / 0.360
G18     102.4          17.5               14.1 +/-    1.53      33.0 +/-    1.53  0.230 / 0.300
G28     279.5          54.0               15.3 +/-    2.41      18.4 +/-    2.41  0.100 / 0.250
G30     336.1          62.5               15.1 +/-    0.35      16.8 +/-    0.35  0.110 / 0.200