PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/09-20:57:50
G07     329.1          56.4                9.9 +/-    0.37      11.7 +/-    0.37  0.110 / 0.140
G08     108.1          51.7               12.9 +/-    0.50      15.9 +/-    0.50  0.120 / 0.160
G09     199.9          76.7               10.0 +/-    0.43      10.2 +/-    0.43  0.040 / 0.040
G11     149.6          10.8                9.0 +/-   23.04      24.6 +/-   23.04  0.030 / 0.040
G23     153.9          41.7               10.5 +/-    1.91      14.9 +/-    1.91  0.060 / 0.080
G27     56.6           32.3                9.7 +/-    1.41      16.2 +/-    1.41  0.090 / 0.080
G28     235.9          28.4               11.5 +/-    1.65      20.9 +/-    1.65  0.240 / 0.690
G30     302.2          36.5               10.9 +/-    1.78      16.8 +/-    1.78  0.230 / 0.620