PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-15:57:50
G10     264.9          36.3                8.2 +/-    1.06      12.7 +/-    1.06  0.090 / 0.130
G13     43.3           20.8                6.5 +/-    2.08      13.9 +/-    2.08  0.150 / 0.120
G15     60.1           48.8                7.1 +/-    0.72       9.1 +/-    0.72  0.040 / 0.070
G16     285.1          11.7                8.1 +/-    1.37      21.7 +/-    1.37  0.040 / 0.070
G18     300.5          64.9                7.2 +/-    0.69       7.9 +/-    0.69  0.240 / 0.390
G20     51.8           38.7                5.8 +/-    0.84       8.6 +/-    0.84  0.210 / 0.420
G24     122.9          12.8               10.4 +/-    2.03      27.3 +/-    2.03  0.100 / 0.160
G27     318.8          18.6                6.2 +/-    2.52      14.2 +/-    2.52  0.200 / 0.280
G29     165.9          29.1                9.6 +/-    1.86      17.1 +/-    1.86  0.190 / 0.310