PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/17-09:28:10
G08     275.5          21.3                7.3 +/-    1.78      15.6 +/-    1.78  0.090 / 0.140
G10     45.9           60.5                4.6 +/-    1.05       5.2 +/-    1.05  0.080 / 0.160
G14     250.0          61.3                6.0 +/-    0.74       6.7 +/-    0.74  0.030 / 0.030
G18     315.5          26.4                3.5 +/-    1.37       6.7 +/-    1.37  0.020 / 0.030
G20     86.6           42.1                5.2 +/-    1.15       7.4 +/-    1.15  0.040 / 0.030
G21     152.6          22.1                5.7 +/-    1.72      11.8 +/-    1.72  0.030 / 0.030
G24     43.2           15.0                2.4 +/-    2.31       5.9 +/-    2.31  0.040 / 0.050
G27     240.2          22.2                5.7 +/-    2.54      11.8 +/-    2.54  0.050 / 0.050
G31     180.6          20.9                3.6 +/-    2.33       7.7 +/-    2.33  0.110 / 0.140
G32     281.7          72.9                5.3 +/-    0.34       5.5 +/-    0.34  0.070 / 0.120