PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-15:42:40
G07     329.0          56.4               11.5 +/-    0.35      13.5 +/-    0.35  0.040 / 0.040
G08     106.1          51.6               12.6 +/-    0.54      15.6 +/-    0.54  0.040 / 0.040
G09     195.0          75.9               11.7 +/-    0.68      12.0 +/-    0.68  0.040 / 0.040
G11     147.8          11.6               11.3 +/-    4.45      30.4 +/-    4.45  0.030 / 0.040
G23     153.4          40.1               11.9 +/-    0.52      17.3 +/-    0.52  0.100 / 0.130
G27     57.0           32.6               10.6 +/-    1.38      17.6 +/-    1.38  0.070 / 0.090
G28     235.7          27.9               11.9 +/-    1.67      21.7 +/-    1.67  0.060 / 0.070
G30     300.5          34.1                9.8 +/-    1.51      15.8 +/-    1.51  0.050 / 0.110