PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-05:57:50
G10     295.0          51.6                3.5 +/-    2.13       4.4 +/-    2.13  0.080 / 0.050
G15     46.3           28.9                3.8 +/-    1.37       6.8 +/-    1.37  0.070 / 0.050
G20     347.1          65.3                3.7 +/-    0.82       4.0 +/-    0.82  0.040 / 0.030
G21     90.3           74.4                3.0 +/-    0.55       3.1 +/-    0.55  0.040 / 0.040
G24     99.5           25.5                7.5 +/-    1.52      14.5 +/-    1.52  0.090 / 0.110
G27     304.3          32.3                2.2 +/-    1.08       3.7 +/-    1.08  0.050 / 0.070
G32     210.2          25.7                4.6 +/-    2.89       8.9 +/-    2.89  0.110 / 0.140