PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-20:28:10
G10     245.7          22.7               12.8 +/-    2.71      26.4 +/-    2.71  0.150 / 0.490
G13     59.2           32.6                8.4 +/-    1.16      13.9 +/-    1.16  0.120 / 0.560
G15     109.8          59.2               10.6 +/-    0.58      12.2 +/-    0.58  0.030 / 0.040
G16     300.8          15.6                5.8 +/-    1.78      14.2 +/-    1.78  0.040 / 0.050
G20     262.2          46.8               10.9 +/-    4.02      14.4 +/-    4.02  0.100 / 0.110
G21     326.9          56.0                9.8 +/-    0.90      11.6 +/-    0.90  0.080 / 0.110
G26     273.2          17.7                9.5 +/-    0.73      22.1 +/-    0.73  0.030 / 0.030
G29     163.0          57.4               11.1 +/-    0.61      12.9 +/-    0.61  0.030 / 0.030