PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-17:28:10
G08     309.6          18.8               11.3 +/-    1.78      25.6 +/-    1.78  0.050 / 0.070
G10     331.0          59.8               10.9 +/-    0.66      12.4 +/-    0.66  0.050 / 0.080
G14     218.4          31.1               17.4 +/-    2.09      29.9 +/-    2.09  0.030 / 0.050
G18     41.9           58.2               10.8 +/-    0.41      12.4 +/-    0.41  0.040 / 0.050
G21     134.3          51.2               15.5 +/-    1.06      19.3 +/-    1.06  0.050 / 0.090
G24     75.0           30.5               11.4 +/-    0.38      19.8 +/-    0.38  0.050 / 0.070
G27     273.0          37.5               14.5 +/-    0.79      22.0 +/-    0.79  0.080 / 0.170
G32     223.7          51.6               16.6 +/-    1.74      20.5 +/-    1.74  0.070 / 0.130