PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-15:12:30
G10     243.7          19.8                8.4 +/-    1.48      18.5 +/-    1.48  0.060 / 0.050
G13     63.4           34.9                7.8 +/-    0.91      12.4 +/-    0.91  0.060 / 0.060
G15     101.5          56.7               10.7 +/-    0.35      12.5 +/-    0.35  0.110 / 0.210
G16     308.1          13.0                6.4 +/-    1.50      16.8 +/-    1.50  0.120 / 0.200
G18     258.8          52.2                8.9 +/-    0.76      11.0 +/-    0.76  0.040 / 0.050
G20     33.9           58.7                7.8 +/-    0.44       8.9 +/-    0.44  0.040 / 0.050
G21     330.5          58.4                6.7 +/-    0.69       7.7 +/-    0.69  0.090 / 0.310
G26     278.8          18.0                6.7 +/-    1.95      15.6 +/-    1.95  0.100 / 0.310
G29     159.6          55.1               11.9 +/-    1.00      14.1 +/-    1.00  0.050 / 0.110