PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-05:13:00
G10     267.8          38.5                8.5 +/-    1.19      12.6 +/-    1.19  0.050 / 0.040
G13     41.6           17.9                3.7 +/-    0.74       8.5 +/-    0.74  0.050 / 0.040
G15     58.4           48.3                5.8 +/-    1.15       7.5 +/-    1.15  0.160 / 0.660
G16     277.5          11.8                9.8 +/-    2.74      26.3 +/-    2.74  0.220 / 0.670
G20     341.4          68.3                5.2 +/-    0.99       5.6 +/-    0.99  0.170 / 0.270
G21     3.3            72.2                7.3 +/-    0.57       7.7 +/-    0.57  0.160 / 0.240
G24     119.4          14.7                6.8 +/-    2.43      17.0 +/-    2.43  0.070 / 0.090
G27     318.1          19.8                5.8 +/-    1.02      12.8 +/-    1.02  0.070 / 0.060
G29     168.4          30.9                7.6 +/-    1.12      13.0 +/-    1.12  0.160 / 0.260
G32     204.0          11.4                0.6 +/-   29.78       1.5 +/-   29.78  0.120 / 0.270