PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-18:28:00
G01     320.2          15.2                7.6 +/-    2.57      18.8 +/-    2.57  0.100 / 0.210
G08     258.4          15.0                7.9 +/-    2.11      19.6 +/-    2.11  0.110 / 0.300
G10     74.7           54.4                8.8 +/-    0.61      10.5 +/-    0.61  0.040 / 0.030
G11     305.0          22.3                8.8 +/-    2.09      18.3 +/-    2.09  0.040 / 0.040
G14     287.4          70.3                7.8 +/-    0.58       8.3 +/-    0.58  0.080 / 0.190
G18     305.8          40.7                6.7 +/-    2.05       9.7 +/-    2.05  0.090 / 0.160
G20     102.4          31.4                7.5 +/-    1.06      12.8 +/-    1.06  0.070 / 0.040
G27     228.7          11.7                8.0 +/-    2.17      21.4 +/-    2.17  0.070 / 0.040
G31     179.7          35.0                8.0 +/-    0.92      12.7 +/-    0.92  0.200 / 0.380
G32     357.4          70.4                7.5 +/-    0.43       7.9 +/-    0.43  0.160 / 0.280