PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-18:57:50
G08     270.9          19.3                8.2 +/-    2.00      18.4 +/-    2.00  0.210 / 0.130
G10     53.5           60.2                7.8 +/-    0.57       8.9 +/-    0.57  0.170 / 0.110
G11     314.1          14.4                5.9 +/-    2.29      15.0 +/-    2.29  0.090 / 0.100
G14     259.9          64.1                9.0 +/-    0.89       9.9 +/-    0.89  0.100 / 0.110
G18     89.4           37.0                8.0 +/-    0.91      12.2 +/-    0.91  0.140 / 0.380
G21     152.3          13.4               10.6 +/-    2.30      27.4 +/-    2.30  0.110 / 0.100
G24     41.7           13.6                5.9 +/-    4.52      15.2 +/-    4.52  0.020 / 0.020
G27     233.3          17.8                9.4 +/-    2.43      21.9 +/-    2.43  0.020 / 0.020
G31     180.2          25.4                9.9 +/-    1.87      19.2 +/-    1.87  0.040 / 0.050
G32     321.7          75.4                7.4 +/-    0.48       7.6 +/-    0.48  0.040 / 0.040