PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/02-09:28:00
G01     315.8          25.0                2.5 +/-    2.09       4.9 +/-    2.09  0.090 / 0.180
G10     91.4           47.4                4.4 +/-    0.39       5.7 +/-    0.39  0.070 / 0.120
G11     294.8          26.2                4.2 +/-    0.91       7.9 +/-    0.91  0.150 / 0.190
G14     324.0          71.3                4.7 +/-    0.97       4.9 +/-    0.97  0.120 / 0.260
G18     294.5          47.0                5.5 +/-    1.17       7.3 +/-    1.17  0.050 / 0.040
G20     111.9          23.3                3.2 +/-    1.33       6.5 +/-    1.33  0.050 / 0.030
G22     305.7          19.5                3.9 +/-    2.48       8.6 +/-    2.48  0.050 / 0.060
G25     94.1           11.5              -10.9 +/-   27.04     -29.4 +/-   27.04  0.040 / 0.050
G31     173.9          50.3                6.2 +/-    0.85       7.8 +/-    0.85  0.070 / 0.180
G32     12.2           64.8                2.6 +/-    0.91       2.9 +/-    0.91  0.070 / 0.180