PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-16:57:20
G02     205.1          36.4               13.8 +/-    1.17      21.3 +/-    1.17  0.060 / 0.110
G06     145.6          73.8               12.5 +/-    0.87      13.0 +/-    0.87  0.120 / 0.100
G12     310.7          21.6               10.9 +/-    2.35      23.1 +/-    2.35  0.080 / 0.130
G17     39.8           46.1                9.7 +/-    1.21      12.9 +/-    1.21  0.090 / 0.140
G19     1.6            64.6               10.3 +/-    0.57      11.3 +/-    0.57  0.030 / 0.030
G24     292.3          40.6                7.7 +/-   10.41      11.1 +/-   10.41  0.030 / 0.030
G28     105.9          28.9               12.4 +/-    1.59      22.2 +/-    1.59  0.030 / 0.040