PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/05-00:27:40
G02     200.8          28.6               14.0 +/-    1.97      25.3 +/-    1.97  0.040 / 0.040
G06     167.9          60.9               12.9 +/-    0.66      14.5 +/-    0.66  0.040 / 0.040
G17     23.8           57.9               10.2 +/-    1.14      11.8 +/-    1.14  0.070 / 0.090
G19     341.5          69.1               10.0 +/-    0.58      10.6 +/-    0.58  0.110 / 0.090
G24     305.4          33.7                9.6 +/-    1.57      15.5 +/-    1.57  0.080 / 0.110
G28     95.4           35.5               10.5 +/-    0.74      16.5 +/-    0.74  0.050 / 0.080