PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-06:57:40
G10     299.5          53.0                3.3 +/-    1.90       4.0 +/-    1.90  0.070 / 0.100
G14     209.9          12.8                2.7 +/-    3.14       7.1 +/-    3.14  0.070 / 0.090
G15     45.8           26.3                1.9 +/-    0.58       3.7 +/-    0.58  0.040 / 0.040
G20     354.6          65.2                1.2 +/-    1.46       1.3 +/-    1.46  0.040 / 0.040
G21     100.9          72.2                2.4 +/-    0.73       2.5 +/-    0.73  0.040 / 0.050
G24     95.9           26.6                4.8 +/-    0.98       9.1 +/-    0.98  0.040 / 0.040
G27     301.3          33.6                4.3 +/-    0.98       7.1 +/-    0.98  0.110 / 0.430
G32     211.5          28.1                5.3 +/-    2.50       9.6 +/-    2.50  0.110 / 0.430