PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/01-22:57:30
G02     53.8           37.7                8.4 +/-    0.82      12.7 +/-    0.82  0.240 / 0.510
G05     69.3           65.6                8.5 +/-    0.57       9.2 +/-    0.57  0.270 / 0.490
G12     184.2          37.8               12.2 +/-    1.56      18.4 +/-    1.56  0.030 / 0.040
G13     133.1          10.8                1.3 +/-   28.62       3.4 +/-   28.62  0.030 / 0.040
G21     265.8          12.5               10.3 +/-   12.76      27.1 +/-   12.76  0.110 / 0.090
G25     247.7          55.8               10.3 +/-    0.96      12.2 +/-    0.96  0.110 / 0.100
G29     323.3          47.3                9.3 +/-    1.04      12.1 +/-    1.04  0.050 / 0.100