PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-16:58:00
G10     301.0          52.6                9.8 +/-    0.90      12.0 +/-    0.90  0.060 / 0.070
G14     211.1          14.7               13.5 +/-    2.46      33.8 +/-    2.46  0.060 / 0.080
G15     45.6           24.3                7.0 +/-    0.83      13.8 +/-    0.83  0.060 / 0.120
G18     9.4            64.9                7.8 +/-    0.91       8.5 +/-    0.91  0.060 / 0.140
G20     72.6           18.4                7.3 +/-    0.63      16.7 +/-    0.63  0.080 / 0.100
G21     111.3          66.6               13.0 +/-    0.56      14.0 +/-    0.56  0.070 / 0.080
G24     95.6           27.6                9.4 +/-    1.50      17.2 +/-    1.50  0.270 / 0.590
G27     295.7          36.1               10.1 +/-    1.40      15.7 +/-    1.40  0.160 / 0.650
G32     212.3          34.0               13.9 +/-    1.20      22.5 +/-    1.20  0.030 / 0.050