PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/07-14:42:30
G02     201.0          18.4                6.4 +/-    3.16      14.6 +/-    3.16  0.060 / 0.070
G06     169.3          54.0                7.6 +/-    0.91       9.2 +/-    0.91  0.050 / 0.070
G13     226.0          13.5                6.0 +/-    8.28      15.6 +/-    8.28  0.100 / 0.110
G17     15.3           63.0                5.4 +/-    0.82       6.0 +/-    0.82  0.080 / 0.120
G19     327.1          71.4                5.3 +/-    1.02       5.6 +/-    1.02  0.040 / 0.040
G24     310.2          28.7                4.9 +/-    1.44       8.7 +/-    1.44  0.040 / 0.040
G28     82.8           45.0                6.2 +/-    1.16       8.4 +/-    1.16  0.040 / 0.030
G30     157.0          14.5                6.8 +/-    1.42      17.1 +/-    1.42  0.050 / 0.030