PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-11:43:10
G08     274.8          21.5                6.4 +/-    1.01      13.6 +/-    1.01  0.130 / 0.200
G10     45.6           60.6                5.4 +/-    1.02       6.1 +/-    1.02  0.080 / 0.200
G14     250.2          61.4                7.0 +/-    0.44       7.8 +/-    0.44  0.410 / 0.240
G18     315.3          27.0                2.5 +/-    1.15       4.7 +/-    1.15  0.450 / 0.320
G20     86.5           42.1                5.6 +/-    1.34       7.9 +/-    1.34  0.050 / 0.050
G21     152.2          20.7                4.0 +/-    1.55       8.6 +/-    1.55  0.040 / 0.050
G24     42.8           14.4                2.3 +/-    4.00       5.8 +/-    4.00  0.040 / 0.020
G27     240.7          22.3                6.3 +/-    0.94      13.2 +/-    0.94  0.040 / 0.020
G31     181.5          19.8                5.1 +/-    1.25      11.2 +/-    1.25  0.100 / 0.090
G32     286.1          74.0                5.7 +/-    0.57       5.9 +/-    0.57  0.080 / 0.100