PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/26-05:27:50
G01     66.0           32.1                5.7 +/-    1.02       9.5 +/-    1.02  0.030 / 0.050
G07     139.7          26.9                8.3 +/-    1.61      15.5 +/-    1.61  0.040 / 0.040
G11     51.7           28.3                4.6 +/-    1.24       8.3 +/-    1.24  0.030 / 0.030
G13     270.7          36.4                5.5 +/-    0.91       8.5 +/-    0.91  0.020 / 0.030
G15     298.3          16.4                4.3 +/-    1.48      10.3 +/-    1.48  0.140 / 0.290
G17     243.4          73.2                7.0 +/-    0.31       7.3 +/-    0.31  0.100 / 0.240
G19     227.8          47.0                6.3 +/-    2.08       8.3 +/-    2.08  0.040 / 0.070
G28     28.1           57.9                5.1 +/-    2.28       5.9 +/-    2.28  0.040 / 0.070
G30     138.9          55.5                7.8 +/-    0.80       9.3 +/-    0.80  0.040 / 0.080