PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-20:58:10
G02     202.6          32.8               18.1 +/-    1.87      30.0 +/-    1.87  0.100 / 0.280
G06     159.8          67.8               14.2 +/-    0.40      15.2 +/-    0.40  0.080 / 0.310
G12     306.8          14.7               10.3 +/-    1.81      25.7 +/-    1.81  0.080 / 0.100
G17     31.5           52.8               13.1 +/-    0.98      15.9 +/-    0.98  0.110 / 0.100
G19     352.2          67.0               12.8 +/-    0.48      13.7 +/-    0.48  0.050 / 0.030
G24     299.7          37.4               13.2 +/-    2.27      20.1 +/-    2.27  0.040 / 0.030
G28     100.7          32.3               12.2 +/-    1.04      20.3 +/-    1.04  0.060 / 0.030