PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-17:42:50
G07     27.5           69.3               14.0 +/-    0.44      14.8 +/-    0.44  0.040 / 0.050
G08     59.7           47.5               13.6 +/-    0.58      17.7 +/-    0.58  0.040 / 0.060
G09     179.4          44.7               17.2 +/-    0.90      23.3 +/-    0.90  0.050 / 0.080
G11     127.2          30.3               16.5 +/-    1.81      28.8 +/-    1.81  0.050 / 0.080
G18     111.1          12.6               15.9 +/-    2.89      41.8 +/-    2.89  0.210 / 0.420
G23     158.8          10.8               18.7 +/-    5.40      51.4 +/-    5.40  0.170 / 0.410
G27     38.7           13.1                8.5 +/-    1.09      22.2 +/-    1.09  0.080 / 0.210
G28     265.3          48.7               16.9 +/-    0.83      21.7 +/-    0.83  0.080 / 0.160
G30     325.8          55.1               14.3 +/-    0.68      17.0 +/-    0.68  0.030 / 0.050