PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/15-14:42:30
G02     348.5          78.1                7.9 +/-    0.91       8.0 +/-    0.91  0.070 / 0.080
G05     166.6          32.7               13.7 +/-    1.14      22.7 +/-    1.14  0.040 / 0.110
G06     41.5           41.3                6.9 +/-    0.58       9.8 +/-    0.58  0.130 / 0.250
G12     309.6          71.4                7.9 +/-    0.44       8.3 +/-    0.44  0.130 / 0.240
G19     77.4           25.0               10.8 +/-    1.00      21.1 +/-    1.00  0.030 / 0.040
G24     229.0          22.4               10.8 +/-    2.65      22.5 +/-    2.65  0.030 / 0.040
G25     316.9          32.0                6.9 +/-    1.03      11.6 +/-    1.03  0.080 / 0.120
G29     289.2          13.7                7.1 +/-    2.63      18.1 +/-    2.63  0.080 / 0.130