PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/29-16:27:40
G07     25.9           69.2               16.8 +/-    0.49      17.9 +/-    0.49  0.040 / 0.070
G08     59.7           47.2               16.2 +/-    0.56      21.2 +/-    0.56  0.050 / 0.060
G09     179.1          44.9               19.7 +/-    1.08      26.5 +/-    1.08  0.040 / 0.040
G11     127.3          30.0               18.9 +/-    2.20      33.1 +/-    2.20  0.030 / 0.040
G18     111.5          12.3               17.7 +/-    1.35      46.8 +/-    1.35  0.050 / 0.050
G23     159.1          12.3               16.2 +/-    2.09      43.1 +/-    2.09  0.040 / 0.050
G27     38.9           13.7               11.1 +/-    1.68      28.4 +/-    1.68  0.050 / 0.090
G28     264.3          48.2               20.0 +/-    0.66      25.8 +/-    0.66  0.050 / 0.090
G30     324.6          54.1               16.5 +/-    1.26      19.8 +/-    1.26  0.080 / 0.250