PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-16:42:50
G07     40.7           69.8               17.3 +/-    0.83      18.3 +/-    0.83  0.040 / 0.050
G08     54.5           43.9               15.5 +/-    0.82      21.2 +/-    0.82  0.040 / 0.050
G09     178.5          39.6               21.0 +/-    1.13      30.7 +/-    1.13  0.030 / 0.040
G11     122.7          33.1               19.5 +/-    0.95      32.1 +/-    0.95  0.030 / 0.040
G18     107.3          14.9               16.1 +/-    2.98      40.3 +/-    2.98  0.050 / 0.050
G28     271.2          51.1               19.3 +/-    1.34      24.0 +/-    1.34  0.040 / 0.040
G30     329.7          58.1               15.5 +/-    0.88      18.0 +/-    0.88  0.070 / 0.150