PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/31-16:12:50
G08     316.5          14.5                5.2 +/-    3.80      13.1 +/-    3.80  0.050 / 0.050
G10     315.8          56.7                6.6 +/-    1.12       7.7 +/-    1.12  0.060 / 0.050
G14     214.4          22.9               11.1 +/-    1.80      22.7 +/-    1.80  0.080 / 0.110
G15     45.6           16.2                6.4 +/-    1.80      15.4 +/-    1.80  0.090 / 0.100
G18     28.1           61.6                8.0 +/-    1.49       9.0 +/-    1.49  0.080 / 0.290
G20     79.1           13.2                5.6 +/-    1.80      14.4 +/-    1.80  0.110 / 0.220
G21     125.3          59.9                9.1 +/-    0.32      10.3 +/-    0.32  0.080 / 0.060
G24     84.9           30.0                8.0 +/-    1.11      14.0 +/-    1.11  0.070 / 0.040
G27     284.2          37.9                9.6 +/-    2.56      14.4 +/-    2.56  0.260 / 0.220
G32     217.3          43.6               11.0 +/-    1.03      15.1 +/-    1.03  0.260 / 0.280