PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-17:28:00
G08     315.7          15.2                7.7 +/-    1.61      19.1 +/-    1.61  0.050 / 0.080
G10     316.8          57.0                7.3 +/-    0.74       8.6 +/-    0.74  0.050 / 0.080
G14     214.6          23.8               14.6 +/-    3.09      29.4 +/-    3.09  0.040 / 0.040
G15     45.7           15.8                7.5 +/-    1.23      18.3 +/-    1.23  0.050 / 0.050
G18     28.6           61.6                9.9 +/-    0.41      11.1 +/-    0.41  0.140 / 0.530
G20     79.8           12.2               10.5 +/-    2.16      28.0 +/-    2.16  0.160 / 0.470
G21     126.3          58.4               11.8 +/-    0.46      13.6 +/-    0.46  0.080 / 0.130
G24     84.3           30.1                9.7 +/-    0.75      16.9 +/-    0.75  0.080 / 0.120
G27     283.4          38.0               10.5 +/-    1.11      15.8 +/-    1.11  0.110 / 0.310
G32     217.7          43.7               11.8 +/-    1.63      16.2 +/-    1.63  0.090 / 0.320