PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-18:12:40
G07     318.7          53.4               11.0 +/-    0.95      13.4 +/-    0.95  0.040 / 0.040
G08     120.1          44.4               15.8 +/-    1.09      21.5 +/-    1.09  0.040 / 0.050
G09     282.7          81.7                9.5 +/-    0.37       9.6 +/-    0.37  0.110 / 0.210
G16     42.5           24.1                9.1 +/-    2.31      18.1 +/-    2.31  0.090 / 0.400
G23     148.4          59.2               13.8 +/-    0.49      15.8 +/-    0.49  0.040 / 0.020
G27     75.1           37.7               12.7 +/-    1.17      19.2 +/-    1.17  0.040 / 0.020
G28     226.2          13.1               14.9 +/-   11.02      38.7 +/-   11.02  0.070 / 0.060
G30     290.1          26.0               10.6 +/-    1.63      20.3 +/-    1.63  0.070 / 0.070