PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-20:12:30
G10     245.9          22.9               14.0 +/-    3.16      28.8 +/-    3.16  0.040 / 0.080
G13     59.0           32.5               11.8 +/-    0.75      19.7 +/-    0.75  0.040 / 0.070
G15     109.0          59.2               13.6 +/-    0.55      15.6 +/-    0.55  0.140 / 0.720
G16     300.7          15.6                9.0 +/-    2.24      22.0 +/-    2.24  0.150 / 0.640
G20     262.5          46.9               13.3 +/-    0.72      17.4 +/-    0.72  0.060 / 0.120
G21     327.2          56.2               11.8 +/-    1.19      13.9 +/-    1.19  0.060 / 0.120
G26     273.1          17.6               11.6 +/-    2.05      27.0 +/-    2.05  0.030 / 0.050
G29     163.0          57.1               13.8 +/-    0.98      16.1 +/-    0.98  0.030 / 0.050