PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/25-08:27:50
G10     276.6          44.1                8.5 +/-    1.06      11.6 +/-    1.06  0.040 / 0.040
G13     38.6           11.3                2.0 +/-    6.40       5.5 +/-    6.40  0.030 / 0.040
G15     51.7           41.2                4.7 +/-    0.78       6.7 +/-    0.78  0.090 / 0.050
G20     315.2          63.4                5.8 +/-    0.50       6.4 +/-    0.50  0.080 / 0.050
G21     41.3           75.7                5.7 +/-    0.92       5.9 +/-    0.92  0.130 / 0.160
G24     111.9          19.0                4.5 +/-    1.14      10.0 +/-    1.14  0.220 / 0.590
G27     315.4          23.3                4.7 +/-    1.32       9.5 +/-    1.32  0.260 / 0.280
G29     165.4          17.6                4.4 +/-    1.32      10.2 +/-    1.32  0.100 / 0.320
G32     206.7          12.4                3.8 +/-    3.44      10.0 +/-    3.44  0.130 / 0.130