PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-15:57:40
G07     345.8          62.2               13.2 +/-    0.64      14.8 +/-    0.64  0.040 / 0.050
G08     87.0           53.5               13.2 +/-    0.32      16.0 +/-    0.32  0.030 / 0.050
G09     183.5          64.3               15.0 +/-    0.86      16.4 +/-    0.86  0.040 / 0.040
G11     140.8          18.4               13.7 +/-    1.32      31.3 +/-    1.32  0.040 / 0.040
G23     156.6          29.2               13.9 +/-    1.90      24.7 +/-    1.90  0.080 / 0.100
G27     47.8           26.6               11.1 +/-    1.85      20.8 +/-    1.85  0.080 / 0.100
G28     244.7          36.2               17.2 +/-    1.69      26.7 +/-    1.69  0.060 / 0.120
G30     309.2          41.2               12.7 +/-    1.39      18.1 +/-    1.39  0.050 / 0.110