PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/24-12:27:50
G02     64.3           27.6                2.9 +/-    1.90       5.3 +/-    1.90  0.030 / 0.050
G05     53.5           59.6                4.9 +/-    1.12       5.5 +/-    1.12  0.030 / 0.030
G12     181.0          25.6                6.2 +/-    2.27      11.8 +/-    2.27  0.090 / 0.130
G13     122.5          18.1                6.2 +/-    2.01      14.4 +/-    2.01  0.100 / 0.130
G15     158.7          17.8                4.6 +/-    1.98      10.8 +/-    1.98  0.040 / 0.040
G21     275.9          20.5                5.2 +/-    1.68      11.2 +/-    1.68  0.030 / 0.030
G25     230.0          48.5                7.8 +/-    2.76      10.1 +/-    2.76  0.180 / 0.330
G29     331.2          58.2                3.6 +/-    0.82       4.1 +/-    0.82  0.090 / 0.280