PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-19:12:30
G07     6.7            66.1               11.5 +/-    0.67      12.5 +/-    0.67  0.040 / 0.030
G08     75.9           51.0               12.5 +/-    0.53      15.6 +/-    0.53  0.030 / 0.030
G09     183.2          61.4               12.8 +/-    0.93      14.3 +/-    0.93  0.090 / 0.150
G11     136.2          22.0               15.7 +/-    3.10      32.8 +/-    3.10  0.080 / 0.100
G23     159.0          30.0               13.4 +/-    1.81      23.4 +/-    1.81  0.030 / 0.040
G27     46.7           25.9               10.8 +/-    2.39      20.7 +/-    2.39  0.040 / 0.040
G28     246.1          35.0               14.3 +/-    1.13      22.7 +/-    1.13  0.080 / 0.180
G30     312.3          44.3               10.6 +/-    0.62      14.5 +/-    0.62  0.100 / 0.110