PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/13-20:42:40
G02     67.7           27.2                8.9 +/-    1.44      16.6 +/-    1.44  0.030 / 0.030
G05     47.9           51.0                9.6 +/-    0.66      11.9 +/-    0.66  0.040 / 0.040
G12     179.7          17.8               12.0 +/-    1.67      27.9 +/-    1.67  0.130 / 0.180
G13     118.3          22.8               12.5 +/-    1.30      25.7 +/-    1.30  0.190 / 0.190
G15     160.3          20.0               13.5 +/-    1.60      29.8 +/-    1.60  0.110 / 0.080
G21     280.3          23.3               10.2 +/-    1.27      20.7 +/-    1.27  0.080 / 0.080
G25     221.8          42.5               10.3 +/-    2.14      14.4 +/-    2.14  0.150 / 0.190
G26     319.1          10.9              -17.6 +/-   20.53     -48.2 +/-   20.53  0.130 / 0.210
G29     334.7          64.6                9.8 +/-    0.37      10.7 +/-    0.37  0.040 / 0.030