PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/04-19:13:10
G01     320.0          15.5                8.0 +/-    2.18      19.7 +/-    2.18  0.040 / 0.030
G08     258.0          14.8                9.1 +/-    2.57      22.7 +/-    2.57  0.030 / 0.040
G10     75.4           54.2                9.1 +/-    0.36      10.9 +/-    0.36  0.150 / 0.490
G11     304.7          22.5                7.5 +/-    1.76      15.6 +/-    1.76  0.180 / 0.430
G14     288.5          70.3                8.3 +/-    0.56       8.8 +/-    0.56  0.140 / 0.390
G20     102.8          31.1               10.3 +/-    1.24      17.7 +/-    1.24  0.190 / 0.320
G27     228.2          11.4               10.6 +/-    3.04      28.7 +/-    3.04  0.070 / 0.050
G31     179.1          36.0               12.3 +/-    2.12      19.2 +/-    2.12  0.070 / 0.040
G32     359.4          70.0                9.6 +/-    0.70      10.2 +/-    0.70  0.120 / 0.270