PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-07:12:30
G07     354.6          64.5                6.1 +/-    0.88       6.6 +/-    0.88  0.040 / 0.040
G08     84.5           53.4                7.6 +/-    0.96       9.2 +/-    0.96  0.030 / 0.030
G09     180.8          61.6                8.7 +/-    0.53       9.7 +/-    0.53  0.160 / 0.110
G11     140.1          20.6                7.2 +/-    3.11      15.6 +/-    3.11  0.170 / 0.110
G23     157.8          29.6                6.1 +/-    0.60      10.8 +/-    0.60  0.050 / 0.030
G27     46.9           25.7                3.9 +/-    1.71       7.5 +/-    1.71  0.040 / 0.040
G28     243.3          30.7                7.8 +/-    1.06      13.5 +/-    1.06  0.140 / 0.070
G30     309.2          41.0                5.7 +/-    1.41       8.1 +/-    1.41  0.100 / 0.080