PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-17:42:40
G02     203.3          31.3               14.3 +/-    2.10      24.4 +/-    2.10  0.090 / 0.080
G06     157.7          68.4               13.6 +/-    0.25      14.5 +/-    0.25  0.050 / 0.110
G12     307.5          16.7               13.3 +/-    2.46      31.7 +/-    2.46  0.030 / 0.030
G17     34.1           50.7               12.6 +/-    0.90      15.7 +/-    0.90  0.030 / 0.030
G19     349.4          67.2               13.0 +/-    0.35      14.0 +/-    0.35  0.210 / 0.320
G24     298.8          38.0               13.3 +/-    2.19      20.0 +/-    2.19  0.150 / 0.250
G28     100.6          32.4               12.2 +/-    0.90      20.3 +/-    0.90  0.030 / 0.030