PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/21-19:12:40
G07     339.9          60.5               11.6 +/-    0.37      13.1 +/-    0.37  0.030 / 0.040
G08     98.3           51.1               12.1 +/-    1.00      15.0 +/-    1.00  0.040 / 0.050
G09     195.6          75.6               13.4 +/-    0.63      13.8 +/-    0.63  0.070 / 0.080
G11     145.1          13.5               14.3 +/-    1.22      36.8 +/-    1.22  0.070 / 0.080
G16     46.0           12.4                8.0 +/-    2.89      21.0 +/-    2.89  0.250 / 0.310
G23     155.6          43.9               13.5 +/-    0.73      18.5 +/-    0.73  0.190 / 0.220
G27     58.0           33.7                9.9 +/-    1.10      16.0 +/-    1.10  0.030 / 0.020
G28     235.2          25.0               13.3 +/-    2.63      26.0 +/-    2.63  0.040 / 0.020
G30     301.4          35.0                9.6 +/-    1.81      15.3 +/-    1.81  0.070 / 0.110