PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-17:42:40
G02     201.6          24.0               16.3 +/-    3.02      32.6 +/-    3.02  0.280 / 0.490
G06     165.6          60.4               15.7 +/-    0.51      17.7 +/-    0.51  0.420 / 0.690
G12     303.2          11.1                0.1 +/-   22.52       0.3 +/-   22.52  0.070 / 0.110
G17     26.5           56.5               11.9 +/-    0.66      13.9 +/-    0.66  0.080 / 0.110
G19     328.6          69.8               12.9 +/-    0.36      13.6 +/-    0.36  0.030 / 0.030
G24     305.9          33.7               11.6 +/-    1.81      18.8 +/-    1.81  0.030 / 0.030
G28     93.1           37.0               13.0 +/-    1.08      19.8 +/-    1.08  0.140 / 0.240
G30     157.8          10.9               13.3 +/-    2.48      36.3 +/-    2.48  0.110 / 0.220