PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-16:28:00
G02     17.4           67.4               14.8 +/-    0.49      15.9 +/-    0.49  0.040 / 0.050
G05     160.6          46.4               18.2 +/-    0.64      24.0 +/-    0.64  0.070 / 0.060
G06     46.8           28.1               12.3 +/-    1.71      22.4 +/-    1.71  0.020 / 0.020
G12     247.6          79.2               13.6 +/-    0.35      13.8 +/-    0.35  0.020 / 0.030
G19     89.7           16.6               15.5 +/-    2.65      37.2 +/-    2.65  0.160 / 0.290
G20     197.6          13.2               20.8 +/-    3.00      54.1 +/-    3.00  0.080 / 0.230
G24     218.8          12.7               17.2 +/-    0.95      45.1 +/-    0.95  0.250 / 0.500
G25     310.3          45.4               12.2 +/-    1.44      16.3 +/-    1.44  0.220 / 0.390
G29     299.4          21.9               12.9 +/-    1.24      27.1 +/-    1.24  0.040 / 0.050