PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/19-00:12:30
G07     323.7          54.2                6.3 +/-    0.64       7.6 +/-    0.64  0.360 / 0.260
G08     111.3          49.5                7.7 +/-    0.44       9.7 +/-    0.44  0.170 / 0.350
G09     215.2          80.5                7.2 +/-    0.47       7.3 +/-    0.47  0.040 / 0.050
G16     44.6           14.3                2.9 +/-    0.96       7.4 +/-    0.96  0.030 / 0.030
G23     152.8          48.4                7.1 +/-    0.68       9.2 +/-    0.68  0.130 / 0.300
G27     61.0           34.0                5.8 +/-    1.41       9.4 +/-    1.41  0.110 / 0.370
G28     232.7          25.0                8.2 +/-    1.60      16.1 +/-    1.60  0.030 / 0.050
G30     298.4          33.5                4.9 +/-    1.73       8.0 +/-    1.73  0.030 / 0.050