PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/25-14:42:30
G02     215.2          58.5               11.8 +/-    0.60      13.6 +/-    0.60  0.100 / 0.080
G06     62.4           76.5               18.4 +/-    0.44      18.9 +/-    0.44  0.110 / 0.100
G12     318.4          35.0                7.5 +/-    1.52      11.9 +/-    1.52  0.040 / 0.060
G17     58.6           30.6               10.3 +/-    1.90      17.7 +/-    1.90  0.040 / 0.070
G19     41.0           48.1                8.5 +/-    0.75      11.0 +/-    0.75  0.040 / 0.090
G24     268.7          41.5               11.0 +/-    1.51      15.6 +/-    1.51  0.050 / 0.080
G28     122.6          13.5               10.2 +/-    1.84      26.2 +/-    1.84  0.040 / 0.040