PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-00:58:10
G10     280.6          45.3               10.9 +/-    1.19      14.7 +/-    1.19  0.070 / 0.110
G15     51.1           41.8                7.9 +/-    0.67      11.2 +/-    0.67  0.090 / 0.120
G20     289.2          49.1               12.6 +/-    0.62      16.1 +/-    0.62  0.040 / 0.040
G21     38.7           77.2                9.5 +/-    0.83       9.8 +/-    0.83  0.040 / 0.040
G24     108.7          20.8               10.1 +/-    1.29      21.8 +/-    1.29  0.110 / 0.150
G27     311.8          27.2               10.1 +/-    1.24      18.7 +/-    1.24  0.110 / 0.170
G29     169.0          20.2               12.8 +/-    3.12      28.1 +/-    3.12  0.040 / 0.050
G32     206.1          21.7               14.6 +/-    0.86      30.8 +/-    0.86  0.040 / 0.050