PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-05:28:00
G10     252.8          28.3                9.1 +/-    1.11      16.5 +/-    1.11  0.140 / 0.310
G13     51.5           28.6                6.5 +/-    1.49      11.6 +/-    1.49  0.150 / 0.340
G15     80.8           56.7                7.8 +/-    0.89       9.2 +/-    0.89  0.040 / 0.040
G16     292.5          15.4                5.9 +/-    1.54      14.5 +/-    1.54  0.050 / 0.040
G20     317.1          70.5                7.2 +/-    0.68       7.6 +/-    0.68  0.040 / 0.040
G21     336.6          61.8                7.1 +/-    1.00       7.9 +/-    1.00  0.040 / 0.030
G26     264.1          14.6                7.7 +/-    1.07      19.3 +/-    1.07  0.040 / 0.030
G29     165.8          47.4                7.4 +/-    0.53       9.7 +/-    0.53  0.040 / 0.050