PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-17:58:00
G08     274.5          20.3                7.5 +/-    2.35      16.4 +/-    2.35  0.030 / 0.020
G10     47.2           61.1                8.6 +/-    0.81       9.7 +/-    0.81  0.030 / 0.020
G11     316.0          12.0                6.4 +/-    5.11      17.1 +/-    5.11  0.140 / 0.190
G14     253.7          61.7                9.7 +/-    0.57      10.8 +/-    0.57  0.180 / 0.220
G18     86.5           38.7                9.0 +/-    1.26      13.4 +/-    1.26  0.130 / 0.130
G21     151.9          17.3                8.3 +/-    0.91      19.6 +/-    0.91  0.100 / 0.130
G24     43.2           15.7                7.9 +/-    2.12      19.3 +/-    2.12  0.450 / 0.500
G27     235.8          19.9                9.3 +/-    4.11      20.5 +/-    4.11  0.190 / 0.430
G31     180.4          22.8               11.0 +/-    2.54      22.6 +/-    2.54  0.030 / 0.050
G32     310.0          75.9                9.6 +/-    0.41       9.9 +/-    0.41  0.050 / 0.050