PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/04-19:12:40
G01     320.2          15.1                8.5 +/-    1.73      21.0 +/-    1.73  0.070 / 0.040
G08     258.4          15.0                9.4 +/-    1.81      23.5 +/-    1.81  0.060 / 0.040
G10     74.6           54.4                9.0 +/-    1.10      10.8 +/-    1.10  0.100 / 0.210
G11     305.1          22.3                8.9 +/-    1.89      18.6 +/-    1.89  0.100 / 0.300
G14     287.1          70.2                7.5 +/-    0.92       7.9 +/-    0.92  0.140 / 0.240
G20     102.4          31.4                9.6 +/-    0.87      16.4 +/-    0.87  0.160 / 0.330
G27     228.5          11.7               11.0 +/-    1.24      29.6 +/-    1.24  0.170 / 0.360
G31     179.2          35.6               10.7 +/-    0.83      16.8 +/-    0.83  0.170 / 0.310
G32     358.3          70.3                7.9 +/-    0.38       8.4 +/-    0.38  0.100 / 0.090