PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/26-13:57:50
G02     53.4           37.1                5.0 +/-    1.02       7.6 +/-    1.02  0.020 / 0.020
G05     80.7           70.1                5.7 +/-    1.06       6.1 +/-    1.06  0.030 / 0.030
G12     183.4          39.4                6.7 +/-    0.67       9.8 +/-    0.67  0.040 / 0.070
G13     132.5          9.8                -6.2 +/-   13.77     -17.4 +/-   13.77  0.040 / 0.070
G21     265.4          12.0                4.7 +/-    2.64      12.5 +/-    2.64  0.050 / 0.070
G25     251.0          56.5                4.7 +/-    2.29       5.6 +/-    2.29  0.040 / 0.060
G29     322.8          46.4                3.9 +/-    0.63       5.2 +/-    0.63  0.310 / 0.520