PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-07:57:30
G01     225.3          16.3                4.1 +/-    2.40       9.8 +/-    2.40  0.080 / 0.240
G03     288.6          66.1                2.9 +/-    0.83       3.1 +/-    0.83  0.110 / 0.320
G09     295.4          10.4              -14.5 +/-   17.25     -40.2 +/-   17.25  0.040 / 0.080
G14     88.5           22.0                2.5 +/-    1.22       5.3 +/-    1.22  0.040 / 0.070
G16     147.7          45.7                7.2 +/-    1.15       9.6 +/-    1.15  0.110 / 0.200
G22     211.8          70.0                5.2 +/-    0.55       5.5 +/-    0.55  0.100 / 0.190
G23     307.2          36.7                3.3 +/-    0.84       5.1 +/-    0.84  0.030 / 0.040
G26     98.5           54.9             -100.2 +/-   56.62    -119.6 +/-   56.62  0.030 / 0.050
G31     45.2           31.9                3.3 +/-    0.81       5.5 +/-    0.81  0.060 / 0.110