PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-17:58:00
G07     301.8          43.6               13.8 +/-    3.01      18.9 +/-    3.01  0.060 / 0.080
G08     137.3          36.1               17.1 +/-    0.68      26.5 +/-    0.68  0.050 / 0.080
G09     312.8          73.9               13.9 +/-    0.41      14.4 +/-    0.41  0.040 / 0.040
G16     41.7           27.1               11.6 +/-    1.72      21.5 +/-    1.72  0.040 / 0.040
G23     139.2          63.8               14.6 +/-    0.35      16.1 +/-    0.35  0.150 / 0.160
G27     84.0           36.8               15.1 +/-    1.53      23.2 +/-    1.53  0.120 / 0.200
G30     283.4          21.2               14.0 +/-    2.23      29.8 +/-    2.23  0.150 / 0.280