PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/30-01:28:00
G10     267.3          37.5                9.8 +/-    1.48      14.9 +/-    1.48  0.400 / 0.400
G13     42.3           19.3                7.1 +/-    3.13      15.9 +/-    3.13  0.210 / 0.320
G15     60.7           50.6                8.2 +/-    0.75      10.3 +/-    0.75  0.040 / 0.030
G16     280.2          11.3               10.2 +/-    1.12      27.8 +/-    1.12  0.040 / 0.030
G18     299.0          63.7                9.1 +/-    0.73      10.0 +/-    0.73  0.160 / 0.250
G20     55.6           33.0                6.8 +/-    1.36      11.3 +/-    1.36  0.180 / 0.280
G21     3.4            72.2                8.4 +/-    0.64       8.8 +/-    0.64  0.070 / 0.060
G24     121.1          14.1               11.7 +/-    2.00      29.7 +/-    2.00  0.060 / 0.070
G27     317.5          20.7                9.0 +/-    3.27      19.4 +/-    3.27  0.070 / 0.110
G29     167.4          28.7               11.6 +/-    0.98      20.9 +/-    0.98  0.100 / 0.100