PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-15:28:50
G02     299.8          79.7                7.4 +/-    0.60       7.5 +/-    0.60  0.050 / 0.130
G05     168.3          28.1                9.6 +/-    1.67      17.6 +/-    1.67  0.050 / 0.090
G06     41.0           42.5                5.6 +/-    0.56       7.8 +/-    0.56  0.150 / 0.190
G12     315.4          71.1                7.3 +/-    0.77       7.7 +/-    0.77  0.170 / 0.250
G17     83.8           12.1                7.9 +/-    2.35      20.9 +/-    2.35  0.030 / 0.030
G19     68.8           33.3                6.7 +/-    0.54      10.9 +/-    0.54  0.030 / 0.040
G24     228.6          24.5                9.7 +/-    1.12      19.1 +/-    1.12  0.100 / 0.200
G25     317.4          27.7                5.1 +/-    1.58       9.4 +/-    1.58  0.090 / 0.180