PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-21:57:50
G02     66.5           28.4               10.3 +/-    0.84      18.8 +/-    0.84  0.110 / 0.180
G05     49.9           56.1               10.5 +/-    0.39      12.4 +/-    0.39  0.100 / 0.200
G12     182.6          21.4               18.1 +/-    2.09      38.5 +/-    2.09  0.070 / 0.120
G13     121.5          22.0               16.8 +/-    1.01      35.2 +/-    1.01  0.070 / 0.140
G15     159.8          19.1               18.8 +/-    1.76      42.3 +/-    1.76  0.040 / 0.080
G20     214.4          72.8               15.2 +/-    0.93      15.8 +/-    0.93  0.040 / 0.080
G21     279.2          23.6               13.2 +/-    1.29      26.7 +/-    1.29  0.030 / 0.040
G25     217.9          41.8               16.9 +/-    1.14      23.9 +/-    1.14  0.030 / 0.040
G29     337.5          66.8               12.4 +/-    0.37      13.4 +/-    0.37  0.030 / 0.040