PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-19:57:40
G07     345.9          62.1               14.0 +/-    0.87      15.6 +/-    0.87  0.040 / 0.050
G08     91.5           51.6               15.0 +/-    0.88      18.6 +/-    0.88  0.040 / 0.050
G09     189.3          71.5               14.6 +/-    0.46      15.3 +/-    0.46  0.040 / 0.030
G11     142.6          15.9               17.8 +/-    1.50      43.4 +/-    1.50  0.040 / 0.020
G16     47.3           9.7                 8.0 +/-    4.68      22.5 +/-    4.68  0.100 / 0.080
G23     156.9          40.2               14.1 +/-    0.81      20.5 +/-    0.81  0.070 / 0.080
G27     54.4           31.9               11.3 +/-    1.40      19.1 +/-    1.40  0.090 / 0.170
G28     238.1          28.1               14.7 +/-    1.63      26.8 +/-    1.63  0.190 / 0.180
G30     304.2          37.3               13.5 +/-    1.00      20.6 +/-    1.00  0.050 / 0.040