PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/25-20:13:00
G10     258.7          33.1                9.0 +/-    2.01      14.8 +/-    2.01  0.040 / 0.040
G13     46.4           24.0                9.4 +/-    2.17      18.8 +/-    2.17  0.040 / 0.040
G15     76.3           57.9               10.6 +/-    0.49      12.3 +/-    0.49  0.530 / 0.350
G16     286.3          14.5                6.8 +/-    2.49      17.0 +/-    2.49  0.510 / 0.260
G20     283.0          56.2                9.0 +/-    2.21      10.6 +/-    2.21  0.090 / 0.260
G21     347.1          66.5               11.1 +/-    1.08      12.0 +/-    1.08  0.080 / 0.240
G24     124.5          9.8                -9.8 +/-   36.32     -27.6 +/-   36.32  0.180 / 0.430
G26     259.7          11.7                8.3 +/-    5.15      22.4 +/-    5.15  0.260 / 0.390
G27     321.9          11.3               -5.6 +/-   31.72     -15.2 +/-   31.72  0.080 / 0.150
G29     166.7          40.4               11.3 +/-    0.72      16.3 +/-    0.72  0.060 / 0.300