PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-20:27:50
G02     68.1           27.0                7.6 +/-    2.27      14.2 +/-    2.27  0.050 / 0.050
G05     47.6           50.5                7.9 +/-    0.73       9.9 +/-    0.73  0.030 / 0.050
G12     179.5          17.1               11.8 +/-    1.16      27.9 +/-    1.16  0.160 / 0.190
G13     117.7          23.2               10.0 +/-    1.42      20.3 +/-    1.42  0.130 / 0.190
G15     160.1          20.4               11.2 +/-    1.83      24.5 +/-    1.83  0.100 / 0.090
G21     280.8          23.7                9.7 +/-    1.68      19.5 +/-    1.68  0.100 / 0.090
G25     221.2          42.0               10.0 +/-    2.83      14.1 +/-    2.83  0.130 / 0.290
G26     318.7          11.2              -11.0 +/-   36.19     -29.8 +/-   36.19  0.120 / 0.310
G29     335.1          65.2                8.8 +/-    0.37       9.6 +/-    0.37  0.080 / 0.200