PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-15:12:50
G05     52.4           10.0                5.2 +/-    4.11      14.5 +/-    4.11  0.140 / 0.270
G10     242.4          18.5                7.7 +/-    2.60      17.7 +/-    2.60  0.220 / 0.310
G13     65.5           35.5                6.5 +/-    2.23      10.3 +/-    2.23  0.130 / 0.150
G15     105.2          56.3                7.6 +/-    0.98       9.0 +/-    0.98  0.110 / 0.140
G16     309.9          12.6                4.5 +/-    1.48      11.7 +/-    1.48  0.030 / 0.040
G18     256.4          50.9                7.4 +/-    2.53       9.2 +/-    2.53  0.040 / 0.040
G20     32.4           60.3                4.3 +/-    0.80       4.8 +/-    0.80  0.110 / 0.330
G21     328.1          57.2                4.5 +/-    0.38       5.2 +/-    0.38  0.160 / 0.410
G26     280.7          18.4                5.8 +/-    1.41      13.4 +/-    1.41  0.030 / 0.040
G29     158.7          57.1                8.0 +/-    0.52       9.4 +/-    0.52  0.030 / 0.050