PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-17:58:00
G07     31.1           69.5               14.7 +/-    0.73      15.6 +/-    0.73  0.040 / 0.060
G08     58.4           46.9               13.6 +/-    0.67      17.9 +/-    0.67  0.040 / 0.060
G09     179.3          43.4               15.0 +/-    0.98      20.7 +/-    0.98  0.030 / 0.040
G11     126.2          31.0               15.6 +/-    1.85      26.8 +/-    1.85  0.030 / 0.040
G18     110.1          13.3               14.7 +/-    1.90      38.1 +/-    1.90  0.030 / 0.030
G27     38.3           12.1               10.4 +/-    1.77      27.6 +/-    1.77  0.030 / 0.030
G28     267.0          49.4               14.5 +/-    4.17      18.4 +/-    4.17  0.150 / 0.120
G30     327.2          56.1               13.5 +/-    0.66      15.9 +/-    0.66  0.140 / 0.090