PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-17:13:00
G08     320.2          11.4                2.5 +/-   20.78       6.9 +/-   20.78  0.050 / 0.100
G10     305.7          54.1                8.5 +/-    0.97      10.2 +/-    0.97  0.060 / 0.080
G14     212.1          17.5               11.0 +/-    2.01      25.7 +/-    2.01  0.030 / 0.040
G15     45.4           21.6                7.1 +/-    0.85      14.9 +/-    0.85  0.040 / 0.050
G18     15.7           64.0                7.9 +/-    0.63       8.7 +/-    0.63  0.100 / 0.460
G20     74.9           16.4                8.9 +/-    1.14      21.5 +/-    1.14  0.100 / 0.560
G21     116.7          64.2                9.9 +/-    0.46      10.8 +/-    0.46  0.080 / 0.120
G24     92.2           28.6                9.1 +/-    1.10      16.5 +/-    1.10  0.070 / 0.150
G27     292.0          37.0               10.6 +/-    0.96      16.2 +/-    0.96  0.070 / 0.240
G32     213.8          37.0               12.1 +/-    0.93      18.5 +/-    0.93  0.100 / 0.390