PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-20:13:10
G02     326.4          79.3               52.0 +/-   22.42      52.9 +/-   22.42  0.030 / 0.040
G05     166.9          32.3               24.6 +/-   10.92      41.1 +/-   10.92  0.040 / 0.040
G06     42.3           38.8              -13.8 +/-   16.54     -20.4 +/-   16.54  0.100 / 0.110
G12     308.0          73.8                7.8 +/-    0.81       8.1 +/-    0.81  0.100 / 0.140
G19     77.6           24.8              -41.7 +/-   50.77     -81.9 +/-   50.77  0.080 / 0.300
G24     229.1          22.5              -12.8 +/-   26.26     -26.5 +/-   26.26  0.050 / 0.100
G25     316.5          34.6                9.4 +/-    1.64      15.0 +/-    1.64  0.050 / 0.090
G29     287.6          10.5               -6.7 +/-   24.74     -18.4 +/-   24.74  0.090 / 0.200