PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-17:57:40
G02     215.2          55.3               13.8 +/-    1.62      16.4 +/-    1.62  0.060 / 0.070
G06     61.7           75.4               11.7 +/-    0.55      12.1 +/-    0.55  0.050 / 0.080
G12     318.7          35.8               12.2 +/-    1.96      19.1 +/-    1.96  0.050 / 0.110
G17     58.3           30.8               10.8 +/-    1.00      18.6 +/-    1.00  0.070 / 0.080
G19     40.7           48.3               11.0 +/-    0.87      14.2 +/-    0.87  0.050 / 0.100
G24     269.6          41.7               13.2 +/-    0.91      18.7 +/-    0.91  0.050 / 0.080
G28     122.2          14.2               12.6 +/-    2.08      32.0 +/-    2.08  0.030 / 0.030