PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/21-16:27:50
G08     273.4          19.6                7.3 +/-    0.94      16.1 +/-    0.94  0.210 / 0.300
G10     51.2           60.5                7.1 +/-    0.62       8.0 +/-    0.62  0.230 / 0.200
G11     315.5          12.6                5.0 +/-    2.03      13.2 +/-    2.03  0.100 / 0.120
G14     256.5          62.4               11.0 +/-    0.36      12.2 +/-    0.36  0.120 / 0.120
G18     88.6           37.2                8.1 +/-    1.47      12.3 +/-    1.47  0.110 / 0.220
G21     152.7          16.6                9.2 +/-    2.64      21.9 +/-    2.64  0.150 / 0.270
G24     42.2           14.2                5.9 +/-    3.36      15.0 +/-    3.36  0.130 / 0.570
G27     234.4          18.7                8.8 +/-    4.98      20.0 +/-    4.98  0.130 / 0.110
G31     179.5          25.3               10.4 +/-    1.60      20.1 +/-    1.60  0.030 / 0.020
G32     320.8          75.7                9.1 +/-    0.48       9.4 +/-    0.48  0.020 / 0.020