PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/15-09:27:40
G08     279.8          22.3                7.0 +/-    0.60      14.6 +/-    0.60  0.080 / 0.190
G10     37.3           61.5                5.1 +/-    0.77       5.7 +/-    0.77  0.090 / 0.190
G14     243.6          58.1                7.8 +/-    1.43       9.0 +/-    1.43  0.050 / 0.060
G18     316.6          22.7                2.8 +/-    1.35       5.8 +/-    1.35  0.060 / 0.050
G20     81.8           44.7                6.7 +/-    0.77       9.1 +/-    0.77  0.040 / 0.030
G21     151.4          26.1                5.3 +/-    1.44      10.0 +/-    1.44  0.030 / 0.020
G24     45.6           17.7                4.2 +/-    2.53       9.9 +/-    2.53  0.050 / 0.030
G27     243.8          24.9                7.4 +/-    1.66      14.6 +/-    1.66  0.040 / 0.020
G31     181.5          16.9                5.5 +/-    3.12      13.1 +/-    3.12  0.100 / 0.170
G32     268.6          71.0                6.9 +/-    0.55       7.3 +/-    0.55  0.120 / 0.190