PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-20:13:00
G10     245.9          22.9               13.2 +/-    3.05      27.1 +/-    3.05  0.030 / 0.050
G13     59.0           32.5               10.1 +/-    1.20      16.9 +/-    1.20  0.040 / 0.040
G15     109.0          59.2               13.0 +/-    0.49      14.9 +/-    0.49  0.110 / 0.550
G16     300.7          15.6                9.1 +/-    3.34      22.4 +/-    3.34  0.140 / 0.460
G20     262.5          46.9               12.3 +/-    4.03      16.1 +/-    4.03  0.070 / 0.120
G21     327.2          56.2               11.5 +/-    0.57      13.5 +/-    0.57  0.070 / 0.100
G26     273.1          17.6               11.8 +/-    1.48      27.6 +/-    1.48  0.030 / 0.040
G29     163.0          57.1               13.4 +/-    0.70      15.6 +/-    0.70  0.030 / 0.030