PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-16:12:40
G08     317.0          14.8                3.2 +/-    3.38       8.1 +/-    3.38  0.030 / 0.030
G10     312.2          56.2                5.4 +/-    1.81       6.3 +/-    1.81  0.030 / 0.040
G14     212.7          20.6                7.9 +/-    2.71      17.0 +/-    2.71  0.100 / 0.060
G15     45.7           21.3                5.3 +/-    2.65      11.3 +/-    2.65  0.080 / 0.040
G20     14.0           64.0                6.2 +/-    0.66       6.8 +/-    0.66  0.070 / 0.120
G21     120.4          64.2                7.8 +/-    0.54       8.5 +/-    0.54  0.070 / 0.090
G24     82.7           28.0                6.7 +/-    1.34      12.2 +/-    1.34  0.130 / 0.470
G27     292.6          35.8                6.4 +/-    0.98      10.1 +/-    0.98  0.290 / 0.250
G32     215.0          40.0                8.3 +/-    1.11      12.1 +/-    1.11  0.090 / 0.050