PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/16-14:57:50
G02     64.6           28.0                8.0 +/-    1.09      14.7 +/-    1.09  0.020 / 0.030
G05     52.9           57.9                7.5 +/-    0.60       8.7 +/-    0.60  0.020 / 0.030
G12     185.1          28.0               10.4 +/-    1.35      19.0 +/-    1.35  0.150 / 0.190
G13     125.4          18.7               12.3 +/-    2.08      28.0 +/-    2.08  0.250 / 0.240
G15     159.9          16.7               12.5 +/-    1.32      29.8 +/-    1.32  0.070 / 0.120
G20     212.2          64.4                9.7 +/-    0.50      10.7 +/-    0.50  0.070 / 0.120
G21     277.0          23.9                9.8 +/-    1.26      19.7 +/-    1.26  0.030 / 0.040
G25     228.2          47.5                9.0 +/-    3.34      11.7 +/-    3.34  0.040 / 0.040
G29     338.3          65.1                6.1 +/-    1.02       6.7 +/-    1.02  0.100 / 0.190