PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/01-17:42:50
G07     344.5          61.8               10.0 +/-    0.80      11.2 +/-    0.80  0.040 / 0.050
G08     90.3           54.0               12.1 +/-    0.78      14.5 +/-    0.78  0.040 / 0.060
G09     185.0          65.6                9.9 +/-    1.00      10.8 +/-    1.00  0.060 / 0.140
G11     141.8          17.8               11.8 +/-    1.53      27.4 +/-    1.53  0.050 / 0.140
G23     156.0          28.6               13.0 +/-    1.48      23.4 +/-    1.48  0.040 / 0.050
G27     48.2           26.8                9.3 +/-    1.69      17.4 +/-    1.69  0.040 / 0.050
G28     244.2          35.9               12.3 +/-    1.78      19.2 +/-    1.78  0.070 / 0.360
G30     309.2          41.5                8.5 +/-    1.51      12.1 +/-    1.51  0.080 / 0.390