PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-17:12:50
G08     267.6          19.4                8.4 +/-    1.32      18.9 +/-    1.32  0.160 / 0.430
G10     57.4           58.8               11.2 +/-    0.36      12.9 +/-    0.36  0.120 / 0.320
G11     312.4          16.7                6.9 +/-    2.62      16.4 +/-    2.62  0.140 / 0.330
G14     262.0          65.5               11.5 +/-    0.50      12.5 +/-    0.50  0.090 / 0.260
G18     312.4          33.0                9.2 +/-    0.93      15.2 +/-    0.93  0.070 / 0.050
G20     93.0           38.1               12.5 +/-    0.42      18.8 +/-    0.42  0.070 / 0.060
G21     153.4          14.2               13.8 +/-    2.87      34.9 +/-    2.87  0.030 / 0.040
G27     236.3          18.3               11.1 +/-    1.73      25.5 +/-    1.73  0.020 / 0.030
G31     181.9          24.1               13.6 +/-    1.14      27.1 +/-    1.14  0.130 / 0.250
G32     323.8          75.3               12.6 +/-    0.83      13.0 +/-    0.83  0.160 / 0.270