PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/31-04:27:50
G10     297.9          52.6                6.3 +/-    1.29       7.7 +/-    1.29  0.070 / 0.090
G14     209.7          11.4                1.5 +/-   20.21       4.2 +/-   20.21  0.070 / 0.070
G15     46.0           27.4                3.7 +/-    1.70       6.8 +/-    1.70  0.040 / 0.050
G20     351.3          65.3                4.0 +/-    0.77       4.4 +/-    0.77  0.040 / 0.040
G21     95.0           74.0               -5.9 +/-    1.54      -6.1 +/-    1.54  0.260 / 0.620
G24     98.0           26.3                5.7 +/-    1.17      10.9 +/-    1.17  0.150 / 0.430
G27     302.2          33.4                6.3 +/-    1.02      10.3 +/-    1.02  0.040 / 0.040
G32     210.6          28.5                8.1 +/-    1.25      14.7 +/-    1.25  0.040 / 0.040