PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/30-07:12:40
G08     312.9          17.4                6.2 +/-    2.46      14.5 +/-    2.46  0.030 / 0.030
G10     326.8          59.3                3.8 +/-    0.77       4.4 +/-    0.77  0.040 / 0.030
G14     215.7          27.7                6.6 +/-    2.12      12.1 +/-    2.12  0.030 / 0.050
G15     46.3           12.4                2.5 +/-    2.46       6.6 +/-    2.46  0.040 / 0.040
G20     30.4           61.7                4.9 +/-    1.29       5.5 +/-    1.29  0.060 / 0.050
G21     130.2          59.4                6.9 +/-    0.65       7.9 +/-    0.65  0.060 / 0.060
G24     77.6           29.7                6.1 +/-    1.19      10.8 +/-    1.19  0.100 / 0.180
G27     281.9          37.4                7.3 +/-    2.11      11.0 +/-    2.11  0.140 / 0.190
G32     219.9          43.9                8.2 +/-    1.09      11.2 +/-    1.09  0.250 / 0.340