PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/31-15:42:50
G08     275.7          20.1                5.7 +/-    2.50      12.5 +/-    2.50  0.490 / 0.200
G10     47.4           61.0                6.7 +/-    1.20       7.5 +/-    1.20  0.390 / 0.610
G11     316.6          11.1               -3.4 +/-   12.52      -9.3 +/-   12.52  0.040 / 0.050
G14     253.0          60.8                8.3 +/-    0.66       9.4 +/-    0.66  0.040 / 0.040
G21     152.4          18.9                9.9 +/-    2.10      22.4 +/-    2.10  0.110 / 0.150
G24     43.1           15.5                5.5 +/-    2.10      13.6 +/-    2.10  0.080 / 0.100
G27     235.9          20.0                7.4 +/-    4.18      16.3 +/-    4.18  0.110 / 0.160
G31     179.6          23.8               10.5 +/-    1.70      21.1 +/-    1.70  0.200 / 0.240
G32     313.7          76.1                6.9 +/-    0.36       7.1 +/-    0.36  0.110 / 0.260