PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-22:12:30
G02     56.7           36.4                9.0 +/-    1.32      13.9 +/-    1.32  0.090 / 0.060
G05     64.2           65.6                9.6 +/-    0.53      10.4 +/-    0.53  0.080 / 0.080
G12     184.6          32.8               12.9 +/-    0.89      21.3 +/-    0.89  0.220 / 0.490
G13     130.7          14.2               14.3 +/-    2.58      36.1 +/-    2.58  0.210 / 0.350
G20     205.9          60.2               11.3 +/-    0.53      12.9 +/-    0.53  0.050 / 0.090
G21     269.8          16.4               12.9 +/-    2.88      31.1 +/-    2.88  0.050 / 0.080
G25     230.3          51.7               11.4 +/-    3.10      14.1 +/-    3.10  0.050 / 0.060
G29     328.7          55.1                9.3 +/-    1.18      11.1 +/-    1.18  0.050 / 0.070