PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/09-19:12:40
G08     277.0          21.2                8.8 +/-    1.01      18.8 +/-    1.01  0.080 / 0.100
G10     40.6           61.9                6.5 +/-    0.78       7.3 +/-    0.78  0.110 / 0.150
G14     249.0          59.9                8.7 +/-    0.73       9.9 +/-    0.73  0.110 / 0.130
G18     83.1           40.9                7.5 +/-    0.61      10.7 +/-    0.61  0.150 / 0.200
G21     151.0          19.7                8.5 +/-    1.13      18.7 +/-    1.13  0.120 / 0.160
G24     45.0           17.9                7.4 +/-    2.61      17.1 +/-    2.61  0.110 / 0.130
G27     238.2          21.9                9.1 +/-    2.29      19.2 +/-    2.29  0.020 / 0.020
G31     181.6          19.0                9.8 +/-    0.94      22.1 +/-    0.94  0.020 / 0.020
G32     293.9          75.5                8.4 +/-    0.36       8.6 +/-    0.36  0.120 / 0.250