PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/17-07:43:10
G08     319.7          12.2                4.1 +/-    3.16      10.9 +/-    3.16  0.040 / 0.040
G10     308.9          55.6                4.8 +/-    1.35       5.6 +/-    1.35  0.030 / 0.040
G14     211.7          18.4                3.4 +/-    2.56       7.8 +/-    2.56  0.070 / 0.120
G15     45.5           21.0                3.6 +/-    2.49       7.7 +/-    2.49  0.080 / 0.120
G20     8.8            64.5                4.6 +/-    0.56       5.0 +/-    0.56  0.060 / 0.040
G21     115.3          67.5                5.4 +/-    0.91       5.8 +/-    0.91  0.060 / 0.050
G24     89.0           28.4                6.1 +/-    1.14      11.0 +/-    1.14  0.140 / 0.350
G27     294.7          35.8                5.6 +/-    3.24       8.7 +/-    3.24  0.290 / 0.500
G32     214.3          32.8                6.0 +/-    1.76       9.9 +/-    1.76  0.070 / 0.080