PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-13:42:50
G02     215.9          56.7                8.7 +/-    0.69      10.1 +/-    0.69  0.050 / 0.090
G06     59.5           74.3                7.5 +/-    0.52       7.7 +/-    0.52  0.050 / 0.080
G12     317.8          35.5                5.8 +/-    1.88       9.2 +/-    1.88  0.070 / 0.080
G17     54.6           34.9                6.6 +/-    1.44      10.4 +/-    1.44  0.100 / 0.070
G19     39.6           48.4                6.3 +/-    1.16       8.1 +/-    1.16  0.030 / 0.020
G24     268.2          41.2                8.2 +/-    2.23      11.7 +/-    2.23  0.030 / 0.020
G28     119.7          20.8                6.5 +/-    1.51      14.1 +/-    1.51  0.040 / 0.050