PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/11-08:57:50
G08     301.5          22.1                5.4 +/-    1.28      11.4 +/-    1.28  0.060 / 0.060
G10     351.3          62.2                5.2 +/-    0.42       5.8 +/-    0.42  0.080 / 0.050
G14     222.7          39.4                8.7 +/-    1.42      12.7 +/-    1.42  0.040 / 0.050
G20     52.8           56.5                6.9 +/-    1.02       8.0 +/-    1.02  0.050 / 0.050
G21     141.2          46.7                8.5 +/-    0.55      11.2 +/-    0.55  0.040 / 0.020
G24     63.4           27.8                4.1 +/-    1.26       7.4 +/-    1.26  0.040 / 0.020
G27     266.3          35.4                7.7 +/-    2.37      12.1 +/-    2.37  0.070 / 0.160
G32     230.6          54.5                7.5 +/-    2.19       9.0 +/-    2.19  0.110 / 0.130