PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-20:27:50
G01     308.4          32.1               10.2 +/-    1.98      17.0 +/-    1.98  0.080 / 0.110
G10     104.3          41.7               12.0 +/-    0.79      17.0 +/-    0.79  0.080 / 0.110
G11     284.2          28.1                9.5 +/-    0.79      17.4 +/-    0.79  0.030 / 0.030
G14     354.0          67.5                9.8 +/-    0.37      10.6 +/-    0.37  0.030 / 0.060
G18     116.6          14.0               12.5 +/-    2.59      31.9 +/-    2.59  0.100 / 0.170
G22     308.9          24.0               10.3 +/-    0.87      20.6 +/-    0.87  0.100 / 0.120
G25     83.3           16.1               12.5 +/-    1.87      30.3 +/-    1.87  0.040 / 0.040
G31     171.4          61.8               14.4 +/-    0.52      16.1 +/-    0.52  0.040 / 0.040
G32     33.3           54.3               10.5 +/-    1.51      12.6 +/-    1.51  0.080 / 0.110