PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/08-09:27:50
G02     254.1          78.1                8.3 +/-    0.56       8.5 +/-    0.56  0.050 / 0.050
G05     171.8          18.1                7.0 +/-    1.06      16.1 +/-    1.06  0.050 / 0.050
G06     39.5           56.1                8.2 +/-    0.43       9.7 +/-    0.43  0.050 / 0.070
G12     321.2          55.3                6.6 +/-    1.07       7.8 +/-    1.07  0.050 / 0.070
G17     75.0           17.8                8.2 +/-    0.68      19.1 +/-    0.68  0.120 / 0.280
G19     58.8           38.3                8.5 +/-    1.52      12.7 +/-    1.52  0.120 / 0.180
G24     235.9          31.8               11.3 +/-    0.72      19.1 +/-    0.72  0.050 / 0.200
G25     317.1          21.0               13.9 +/-    2.86      29.7 +/-    2.86  0.060 / 0.200