PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/26-18:13:10
G08     272.7          19.7               10.7 +/-    1.21      23.8 +/-    1.21  0.130 / 0.380
G10     50.7           60.6                9.8 +/-    0.55      11.0 +/-    0.55  0.200 / 0.300
G11     315.1          13.2                7.9 +/-    2.55      20.4 +/-    2.55  0.080 / 0.120
G14     256.9          63.0               12.1 +/-    0.63      13.4 +/-    0.63  0.070 / 0.100
G18     88.2           37.7               10.0 +/-    0.85      15.1 +/-    0.85  0.310 / 0.310
G21     152.2          15.5               12.1 +/-    1.76      29.6 +/-    1.76  0.170 / 0.490
G24     42.3           14.5                7.7 +/-    2.97      19.4 +/-    2.97  0.040 / 0.040
G27     234.4          18.8               11.2 +/-    5.00      25.5 +/-    5.00  0.050 / 0.050
G31     180.2          24.4               12.7 +/-    2.75      25.2 +/-    2.75  0.030 / 0.020
G32     317.0          75.7               10.8 +/-    0.42      11.1 +/-    0.42  0.030 / 0.020