PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-16:27:30
G07     37.0           69.8               12.5 +/-    0.90      13.3 +/-    0.90  0.200 / 0.220
G08     55.6           44.6               12.4 +/-    0.58      16.8 +/-    0.58  0.050 / 0.040
G09     178.5          40.9               12.6 +/-    0.79      18.1 +/-    0.79  0.030 / 0.030
G11     123.8          32.3               12.1 +/-    1.07      20.1 +/-    1.07  0.030 / 0.030
G18     108.3          14.2               12.2 +/-    2.32      30.8 +/-    2.32  0.030 / 0.040
G27     37.9           10.8               10.7 +/-    3.31      29.4 +/-    3.31  0.030 / 0.050
G28     269.4          50.4               13.3 +/-    2.60      16.6 +/-    2.60  0.160 / 0.350
G30     328.3          57.0               11.9 +/-    0.43      13.9 +/-    0.43  0.170 / 0.250