PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/24-06:57:40
G07     359.5          65.5                5.0 +/-    0.64       5.5 +/-    0.64  0.030 / 0.040
G08     79.6           52.9                6.4 +/-    0.96       7.8 +/-    0.96  0.040 / 0.030
G09     179.8          58.7                7.1 +/-    0.58       8.2 +/-    0.58  0.210 / 0.130
G11     138.5          22.2                3.9 +/-    2.12       8.1 +/-    2.12  0.150 / 0.120
G23     158.4          27.2                5.7 +/-    1.85      10.7 +/-    1.85  0.040 / 0.030
G27     45.2           23.9                4.3 +/-    2.10       8.6 +/-    2.10  0.040 / 0.030
G28     245.4          32.5                6.7 +/-    2.11      11.1 +/-    2.11  0.040 / 0.040
G30     311.1          42.7                4.5 +/-    0.80       6.3 +/-    0.80  0.050 / 0.040