PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/14-14:57:30
G02     61.7           30.4                6.7 +/-    0.57      11.7 +/-    0.57  0.050 / 0.040
G05     57.2           61.3                6.9 +/-    0.67       7.8 +/-    0.67  0.040 / 0.040
G12     185.8          31.8                9.8 +/-    1.09      16.6 +/-    1.09  0.080 / 0.330
G13     128.3          16.3               13.5 +/-    1.64      32.6 +/-    1.64  0.080 / 0.220
G15     162.0          13.8               11.9 +/-    2.08      30.5 +/-    2.08  0.080 / 0.110
G20     209.6          60.5               10.6 +/-    0.73      12.0 +/-    0.73  0.060 / 0.110
G21     273.9          21.6                5.5 +/-    2.23      11.6 +/-    2.23  0.060 / 0.060
G25     232.7          50.3                9.0 +/-    1.11      11.3 +/-    1.11  0.040 / 0.050
G29     335.1          61.6                6.3 +/-    0.49       7.0 +/-    0.49  0.040 / 0.060