PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-20:57:30
G02     201.2          26.8               17.2 +/-    1.32      32.2 +/-    1.32  0.100 / 0.340
G06     166.0          61.3               15.1 +/-    0.63      16.9 +/-    0.63  0.080 / 0.120
G12     303.4          10.2               -8.8 +/-   12.91     -24.3 +/-   12.91  0.090 / 0.090
G17     24.9           57.4               12.2 +/-    0.25      14.1 +/-    0.25  0.080 / 0.140
G19     336.0          69.4               13.2 +/-    0.78      14.0 +/-    0.78  0.070 / 0.130
G24     305.4          33.9               12.8 +/-    1.19      20.7 +/-    1.19  0.030 / 0.050
G28     94.6           36.1               12.4 +/-    0.58      19.4 +/-    0.58  0.030 / 0.040