PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-19:58:10
G02     30.4           57.9               12.3 +/-    0.46      14.3 +/-    0.46  0.030 / 0.050
G05     148.6          60.2               14.6 +/-    0.75      16.6 +/-    0.75  0.030 / 0.030
G06     54.0           15.9                8.4 +/-    0.78      20.4 +/-    0.78  0.040 / 0.070
G12     198.2          67.2               10.9 +/-    0.61      11.7 +/-    0.61  0.040 / 0.060
G20     197.8          27.3               14.4 +/-    2.26      26.8 +/-    2.26  0.030 / 0.040
G25     291.6          57.4               11.5 +/-    1.25      13.4 +/-    1.25  0.030 / 0.050
G29     308.4          29.9               11.4 +/-    1.26      19.9 +/-    1.26  0.100 / 0.120