PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-19:12:50
G01     102.4          27.9               16.7 +/-    1.06      30.5 +/-    1.06  0.080 / 0.100
G07     113.3          55.2               16.9 +/-    0.83      20.1 +/-    0.83  0.130 / 0.210
G08     42.0           19.0               11.7 +/-    1.28      26.3 +/-    1.28  0.040 / 0.030
G11     84.1           43.1               16.8 +/-    1.07      23.2 +/-    1.07  0.040 / 0.040
G13     305.9          31.1               13.3 +/-    1.70      22.8 +/-    1.70  0.020 / 0.040
G17     208.9          39.0               18.2 +/-    0.83      26.9 +/-    0.83  0.020 / 0.040
G18     75.8           24.8               15.6 +/-    1.92      30.7 +/-    1.92  0.030 / 0.050
G28     327.8          61.6               13.8 +/-    0.67      15.5 +/-    0.67  0.040 / 0.050
G30     54.4           79.3               16.9 +/-    0.66      17.2 +/-    0.66  0.080 / 0.140