PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/25-18:13:00
G08     274.9          20.5                8.9 +/-    1.76      19.4 +/-    1.76  0.170 / 0.420
G10     45.9           61.3                8.7 +/-    0.79       9.8 +/-    0.79  0.300 / 0.420
G11     316.3          11.6                3.3 +/-   18.19       8.8 +/-   18.19  0.250 / 0.320
G14     252.8          61.4               10.4 +/-    0.39      11.7 +/-    0.39  0.230 / 0.330
G18     85.8           39.2               10.1 +/-    1.02      14.8 +/-    1.02  0.120 / 0.190
G21     151.7          17.7               10.2 +/-    0.80      23.7 +/-    0.80  0.110 / 0.160
G24     43.6           16.1                8.8 +/-    2.59      21.3 +/-    2.59  0.030 / 0.020
G27     236.2          20.3                9.1 +/-    2.76      20.0 +/-    2.76  0.030 / 0.020
G31     180.7          22.0               12.3 +/-    1.55      25.7 +/-    1.55  0.040 / 0.040
G32     306.7          75.9               10.3 +/-    0.42      10.6 +/-    0.42  0.040 / 0.040