PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/31-10:42:50
G08     273.1          20.8                6.4 +/-    1.67      13.8 +/-    1.67  0.110 / 0.220
G10     49.8           59.9                6.1 +/-    0.71       6.9 +/-    0.71  0.170 / 0.220
G14     253.6          62.9                7.4 +/-    0.72       8.2 +/-    0.72  0.030 / 0.020
G18     314.7          28.5                4.8 +/-    1.27       8.6 +/-    1.27  0.030 / 0.030
G20     88.8           40.8                5.4 +/-    1.08       7.7 +/-    1.08  0.030 / 0.020
G21     152.9          19.5                6.1 +/-    1.38      13.5 +/-    1.38  0.030 / 0.020
G24     42.0           13.3                2.6 +/-    3.07       6.6 +/-    3.07  0.050 / 0.050
G27     238.7          21.0                6.2 +/-    1.72      13.4 +/-    1.72  0.050 / 0.060
G31     180.6          22.3                7.6 +/-    1.93      15.8 +/-    1.93  0.270 / 0.270
G32     291.6          74.1                8.0 +/-    0.59       8.3 +/-    0.59  0.090 / 0.200