PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-14:43:10
G05     49.4           15.8                3.8 +/-    0.90       9.2 +/-    0.90  0.080 / 0.200
G10     237.3          12.9                4.6 +/-    1.83      12.1 +/-    1.83  0.150 / 0.210
G13     74.9           37.0                5.4 +/-    0.72       8.3 +/-    0.72  0.110 / 0.240
G15     118.9          53.3                8.1 +/-    0.68       9.9 +/-    0.68  0.110 / 0.240
G16     316.3          10.5               -5.5 +/-    9.04     -15.2 +/-    9.04  0.130 / 0.270
G18     248.0          45.4                6.7 +/-    2.38       8.9 +/-    2.38  0.190 / 0.360
G20     25.1           67.4                5.2 +/-    0.58       5.6 +/-    0.58  0.060 / 0.050
G26     288.2          19.5                6.2 +/-    1.71      13.8 +/-    1.71  0.050 / 0.040
G29     154.3          65.8                7.3 +/-    1.45       7.9 +/-    1.45  0.050 / 0.110