PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-16:43:10
G01     125.1          13.3               13.2 +/-    2.04      34.2 +/-    2.04  0.050 / 0.060
G07     59.3           69.3               12.4 +/-    0.47      13.2 +/-    0.47  0.040 / 0.050
G08     49.5           39.1               11.0 +/-    0.94      16.2 +/-    0.94  0.030 / 0.040
G09     177.7          33.2               12.7 +/-    1.69      20.9 +/-    1.69  0.040 / 0.030
G11     116.3          36.5               12.2 +/-    0.88      18.8 +/-    0.88  0.030 / 0.030
G13     320.5          13.6               12.5 +/-    4.55      32.2 +/-    4.55  0.030 / 0.030
G17     201.1          15.2               13.3 +/-    3.01      32.9 +/-    3.01  0.200 / 0.260
G18     101.7          17.8               12.0 +/-    1.54      28.0 +/-    1.54  0.260 / 0.270
G28     280.4          54.3               12.2 +/-    2.64      14.7 +/-    2.64  0.100 / 0.170
G30     336.7          62.9               11.7 +/-    0.42      13.0 +/-    0.42  0.110 / 0.220