PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/18-17:57:30
G01     310.4          32.3               10.1 +/-    1.53      16.8 +/-    1.53  0.130 / 0.210
G10     100.3          41.7               12.2 +/-    0.86      17.2 +/-    0.86  0.110 / 0.250
G11     292.4          24.7               10.3 +/-    1.39      20.2 +/-    1.39  0.040 / 0.050
G14     330.4          69.7               10.2 +/-    0.52      10.8 +/-    0.52  0.040 / 0.050
G20     117.8          14.9               10.7 +/-    1.25      26.7 +/-    1.25  0.040 / 0.040
G22     307.9          20.5                8.0 +/-    1.78      17.3 +/-    1.78  0.050 / 0.070
G25     87.6           14.1               13.9 +/-    4.38      35.3 +/-    4.38  0.170 / 0.230
G31     171.4          57.7               12.9 +/-    0.61      15.0 +/-    0.61  0.110 / 0.250
G32     31.9           55.2               11.2 +/-    0.75      13.3 +/-    0.75  0.030 / 0.040