PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/18-01:13:00
G02     36.8           52.3                7.7 +/-    0.43       9.5 +/-    0.43  0.020 / 0.040
G05     129.2          65.0               10.9 +/-    0.87      11.9 +/-    0.87  0.030 / 0.040
G06     55.8           12.8                6.9 +/-    1.16      18.0 +/-    1.16  0.040 / 0.040
G12     194.6          63.8               10.0 +/-    2.00      11.0 +/-    2.00  0.030 / 0.030
G25     292.6          54.8                8.0 +/-    0.67       9.6 +/-    0.67  0.060 / 0.060
G29     309.2          29.6                8.7 +/-    0.96      15.4 +/-    0.96  0.040 / 0.060