PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-18:58:00
G08     272.8          19.9               10.5 +/-    1.58      23.1 +/-    1.58  0.130 / 0.360
G10     49.7           60.8                9.1 +/-    0.60      10.3 +/-    0.60  0.200 / 0.290
G11     315.1          13.2                8.7 +/-    2.60      22.5 +/-    2.60  0.350 / 0.200
G14     256.3          62.9               11.1 +/-    0.84      12.3 +/-    0.84  0.240 / 0.410
G18     87.6           38.2               10.3 +/-    0.99      15.4 +/-    0.99  0.040 / 0.050
G21     151.9          15.2               10.0 +/-    1.37      24.8 +/-    1.37  0.040 / 0.050
G24     42.6           14.9                8.7 +/-    2.44      21.6 +/-    2.44  0.030 / 0.010
G27     234.7          19.1               10.5 +/-    4.81      23.7 +/-    4.81  0.030 / 0.020
G31     180.6          23.5               11.1 +/-    2.32      22.5 +/-    2.32  0.030 / 0.020
G32     313.6          75.7                9.8 +/-    0.55      10.1 +/-    0.55  0.020 / 0.020