PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-17:57:40
G02     216.6          57.3               14.7 +/-    1.09      17.2 +/-    1.09  0.050 / 0.060
G06     56.8           73.9               12.0 +/-    0.43      12.4 +/-    0.43  0.040 / 0.050
G12     319.2          37.5                9.1 +/-    1.05      13.9 +/-    1.05  0.050 / 0.070
G19     42.7           47.1               10.8 +/-    0.73      14.2 +/-    0.73  0.080 / 0.070
G24     267.1          41.4               11.1 +/-    0.80      15.8 +/-    0.80  0.050 / 0.080
G28     123.5          12.8               12.7 +/-    2.06      33.3 +/-    2.06  0.040 / 0.070