PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-22:12:30
G02     203.6          37.3               15.3 +/-    1.64      23.4 +/-    1.64  0.100 / 0.220
G06     154.4          71.5               12.5 +/-    0.66      13.1 +/-    0.66  0.120 / 0.210
G12     308.8          17.2               10.5 +/-    1.23      24.7 +/-    1.23  0.050 / 0.100
G17     34.5           50.6               11.7 +/-    0.68      14.6 +/-    0.68  0.050 / 0.090
G19     2.0            64.8               12.1 +/-    0.58      13.3 +/-    0.58  0.070 / 0.150
G24     295.7          39.1               12.6 +/-    1.47      18.7 +/-    1.47  0.070 / 0.160
G28     104.5          29.7               14.1 +/-    0.94      24.9 +/-    0.94  0.080 / 0.090