PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/11-17:58:00
G07     350.7          63.2               13.0 +/-    0.51      14.4 +/-    0.51  0.030 / 0.020
G08     90.5           52.0               13.8 +/-    0.96      16.9 +/-    0.96  0.030 / 0.030
G09     189.1          70.5               13.5 +/-    0.96      14.2 +/-    0.96  0.030 / 0.040
G11     142.0          16.7               14.5 +/-    2.75      34.7 +/-    2.75  0.050 / 0.040
G23     156.9          37.9               14.1 +/-    1.03      21.2 +/-    1.03  0.070 / 0.150
G27     52.9           30.9               12.6 +/-    1.25      21.7 +/-    1.25  0.070 / 0.150
G28     239.0          28.6               13.4 +/-    1.15      24.2 +/-    1.15  0.090 / 0.080
G30     305.9          39.0               12.3 +/-    1.11      18.1 +/-    1.11  0.100 / 0.080