PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-04:58:00
G10     260.9          34.2                7.7 +/-    1.80      12.3 +/-    1.80  0.140 / 0.420
G13     45.2           22.9                4.6 +/-    2.59       9.4 +/-    2.59  0.140 / 0.370
G15     66.7           52.9                6.1 +/-    0.37       7.5 +/-    0.37  0.160 / 0.240
G16     283.9          13.9                6.7 +/-    1.02      17.1 +/-    1.02  0.120 / 0.200
G20     322.2          68.6                6.0 +/-    0.53       6.4 +/-    0.53  0.040 / 0.030
G21     349.2          67.7                5.9 +/-    0.54       6.3 +/-    0.54  0.040 / 0.030
G24     124.9          10.7                2.9 +/-   18.82       7.9 +/-   18.82  0.330 / 0.350
G27     320.8          14.4                3.9 +/-    2.18       9.9 +/-    2.18  0.320 / 0.280
G29     167.5          38.1                7.3 +/-    1.67      10.9 +/-    1.67  0.150 / 0.190