PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-22:43:00
G02     229.8          71.6               12.3 +/-    0.76      12.9 +/-    0.76  0.060 / 0.070
G05     173.0          12.4               19.6 +/-    4.21      51.7 +/-    4.21  0.030 / 0.060
G06     42.8           62.8               11.2 +/-    0.82      12.5 +/-    0.82  0.140 / 0.240
G12     321.4          47.6               10.7 +/-    1.10      13.9 +/-    1.10  0.080 / 0.190
G17     65.3           27.8                8.9 +/-    0.44      16.3 +/-    0.44  0.070 / 0.130
G19     50.3           43.3                9.4 +/-    0.50      13.0 +/-    0.50  0.070 / 0.100
G24     250.7          37.6               13.7 +/-    1.56      20.8 +/-    1.56  0.030 / 0.030