PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/18-00:27:50
G02     15.4           68.6                7.6 +/-    0.42       8.1 +/-    0.42  0.030 / 0.030
G05     156.0          46.8               13.7 +/-    1.16      18.0 +/-    1.16  0.030 / 0.030
G06     46.0           28.6                7.1 +/-    1.06      12.8 +/-    1.06  0.390 / 0.290
G12     260.1          80.1                9.8 +/-    1.65      10.0 +/-    1.65  0.140 / 0.350
G19     85.5           21.1               10.2 +/-    1.21      21.9 +/-    1.21  0.030 / 0.050
G24     219.2          14.0               15.6 +/-    1.79      39.8 +/-    1.79  0.040 / 0.040
G25     313.4          39.5                7.5 +/-    1.53      11.1 +/-    1.53  0.050 / 0.220
G29     295.0          15.6                8.6 +/-    1.84      21.1 +/-    1.84  0.090 / 0.160