PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-17:27:50
G02     228.1          68.4               10.8 +/-    0.63      11.6 +/-    0.63  0.030 / 0.070
G06     43.2           64.1               11.2 +/-    0.50      12.3 +/-    0.50  0.030 / 0.080
G12     321.4          47.1               10.5 +/-    1.38      13.7 +/-    1.38  0.180 / 0.390
G17     68.4           23.1               10.0 +/-    0.88      20.5 +/-    0.88  0.160 / 0.360
G19     53.8           40.3               11.9 +/-    0.45      17.2 +/-    0.45  0.060 / 0.100
G24     253.5          37.9               12.1 +/-    0.72      18.3 +/-    0.72  0.050 / 0.100
G25     315.9          11.7                5.1 +/-   30.21      13.7 +/-   30.21  0.080 / 0.130