PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-08:12:40
G01     127.0          10.1              -12.0 +/-   30.53     -33.3 +/-   30.53  0.030 / 0.030
G07     51.9           69.0                6.1 +/-    0.99       6.5 +/-    0.99  0.030 / 0.030
G08     53.8           43.5                4.0 +/-    1.25       5.5 +/-    1.25  0.190 / 0.000
G09     177.4          37.8                6.2 +/-    1.16       9.3 +/-    1.16  0.140 / 0.270
G11     122.1          35.0                6.7 +/-    0.74      10.6 +/-    0.74  0.050 / 0.060
G13     321.1          11.2               -3.2 +/-   15.31      -8.7 +/-   15.31  0.070 / 0.070
G17     199.9          10.8               -7.4 +/-    9.73     -20.4 +/-    9.73  0.050 / 0.060
G18     104.9          15.7                4.7 +/-    1.20      11.5 +/-    1.20  0.040 / 0.050
G28     266.1          45.9                6.8 +/-    3.44       9.1 +/-    3.44  0.040 / 0.040
G30     328.4          57.8                5.3 +/-    1.11       6.1 +/-    1.11  0.030 / 0.030