PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-16:12:30
G07     327.2          55.7               11.0 +/-    0.43      13.1 +/-    0.43  0.040 / 0.040
G08     108.8          51.1               11.8 +/-    0.39      14.7 +/-    0.39  0.040 / 0.050
G09     198.7          77.3               11.9 +/-    0.30      12.1 +/-    0.30  0.040 / 0.040
G11     148.8          10.8                6.6 +/-   24.77      18.1 +/-   24.77  0.040 / 0.040
G23     152.8          40.9               11.8 +/-    0.54      17.0 +/-    0.54  0.080 / 0.110
G27     58.3           33.2               10.4 +/-    1.43      17.0 +/-    1.43  0.080 / 0.090
G28     234.8          27.0               14.6 +/-    1.66      27.3 +/-    1.66  0.140 / 0.210
G30     299.7          33.4                9.1 +/-    1.47      14.8 +/-    1.47  0.190 / 0.160