PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-19:42:40
G07     328.1          56.0               13.1 +/-    1.43      15.4 +/-    1.43  0.060 / 0.090
G08     110.9          51.5               16.5 +/-    0.75      20.5 +/-    0.75  0.050 / 0.080
G09     201.0          77.2               14.3 +/-    1.51      14.6 +/-    1.51  0.040 / 0.030
G11     149.5          10.7                8.9 +/-   41.43      24.4 +/-   41.43  0.030 / 0.040
G23     153.4          41.5               17.7 +/-    1.28      25.1 +/-    1.28  0.100 / 0.250
G27     57.3           32.6               12.5 +/-    0.61      20.7 +/-    0.61  0.080 / 0.190
G28     235.3          27.8               18.9 +/-    2.16      34.8 +/-    2.16  0.210 / 0.520
G30     301.2          35.4               13.7 +/-    1.22      21.6 +/-    1.22  0.150 / 0.560