PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/28-18:27:50
G03     187.9          17.8               14.4 +/-    1.51      33.5 +/-    1.51  0.050 / 0.080
G07     291.0          37.6               11.3 +/-    1.40      17.2 +/-    1.40  0.050 / 0.090
G08     145.0          27.3               14.1 +/-    0.96      26.1 +/-    0.96  0.030 / 0.040
G09     320.0          62.9               10.2 +/-    1.14      11.4 +/-    1.14  0.020 / 0.040
G16     42.5           37.2               10.0 +/-    0.82      15.2 +/-    0.82  0.030 / 0.040
G23     121.8          75.0               10.5 +/-    1.06      10.8 +/-    1.06  0.040 / 0.040
G27     97.4           34.2               12.0 +/-    1.47      19.4 +/-    1.47  0.150 / 0.240
G30     275.4          15.3               13.2 +/-    1.47      32.6 +/-    1.47  0.110 / 0.180