PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-08:57:40
G01     224.4          15.4              -18.1 +/-   15.58     -44.7 +/-   15.58  0.140 / 0.180
G03     285.5          66.8              -22.2 +/-    7.38     -23.9 +/-    7.38  0.040 / 0.030
G09     296.0          10.7              -14.1 +/-   13.22     -38.8 +/-   13.22  0.040 / 0.030
G14     89.5           21.2                1.6 +/-    0.88       3.5 +/-    0.88  0.270 / 0.190
G16     146.0          47.2               24.1 +/-    5.93      31.5 +/-    5.93  0.150 / 0.350
G22     207.7          68.6               58.3 +/-   15.17      62.1 +/-   15.17  0.080 / 0.070
G23     308.2          37.7               15.6 +/-    6.36      23.5 +/-    6.36  0.080 / 0.060
G26     95.3           54.9             -116.6 +/-   39.11    -139.0 +/-   39.11  0.120 / 0.220
G31     45.8           30.4               23.4 +/-    8.97      40.7 +/-    8.97  0.100 / 0.220