PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-17:28:10
G02     210.4          47.8               13.7 +/-    1.44      17.8 +/-    1.44  0.060 / 0.080
G06     97.3           79.4               12.8 +/-    0.29      13.0 +/-    0.29  0.050 / 0.080
G12     315.8          29.0               11.5 +/-    1.52      20.5 +/-    1.52  0.070 / 0.130
G17     52.1           35.8                9.0 +/-    0.69      14.1 +/-    0.69  0.070 / 0.110
G19     31.6           53.5               11.0 +/-    0.73      13.3 +/-    0.73  0.040 / 0.080
G24     280.2          41.9               10.0 +/-    1.46      14.2 +/-    1.46  0.040 / 0.090
G28     116.7          19.8               10.1 +/-    1.39      22.3 +/-    1.39  0.050 / 0.060