PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-20:42:50
G02     201.8          29.2               14.7 +/-    1.71      26.3 +/-    1.71  0.200 / 0.320
G06     163.8          64.1               13.7 +/-    0.32      15.1 +/-    0.32  0.290 / 0.270
G12     304.9          12.2               10.8 +/-    4.07      28.8 +/-    4.07  0.100 / 0.100
G17     27.9           55.3               11.6 +/-    1.14      13.8 +/-    1.14  0.100 / 0.090
G19     342.8          68.5               10.8 +/-    0.68      11.5 +/-    0.68  0.040 / 0.030
G24     303.1          35.5               11.2 +/-    1.42      17.7 +/-    1.42  0.030 / 0.030
G28     97.2           34.6               12.6 +/-    0.66      20.2 +/-    0.66  0.060 / 0.030