PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/27-03:13:00
G08     285.5          23.0                8.9 +/-    1.16      18.2 +/-    1.16  0.080 / 0.130
G10     23.4           62.9                6.0 +/-    0.43       6.7 +/-    0.43  0.090 / 0.130
G14     236.4          50.6               10.6 +/-    0.81      13.3 +/-    0.81  0.050 / 0.090
G18     317.5          15.8                5.8 +/-    2.18      14.1 +/-    2.18  0.050 / 0.080
G20     45.6           63.7                8.2 +/-    0.61       9.0 +/-    0.61  0.090 / 0.170
G21     150.0          34.3                9.5 +/-    0.43      15.3 +/-    0.43  0.080 / 0.160
G24     49.2           21.0                4.8 +/-    1.20      10.3 +/-    1.20  0.020 / 0.030
G27     247.3          27.8                9.2 +/-    1.96      16.9 +/-    1.96  0.030 / 0.030
G31     180.8          14.2                8.0 +/-    2.10      20.4 +/-    2.10  0.050 / 0.100
G32     268.5          74.6                7.6 +/-    0.64       7.8 +/-    0.64  0.050 / 0.090