PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/19-10:57:40
G02     69.1           23.3                5.2 +/-    0.85      10.5 +/-    0.85  0.030 / 0.040
G05     48.4           52.9                6.5 +/-    0.61       8.0 +/-    0.61  0.030 / 0.040
G12     180.9          21.3                5.9 +/-    1.98      12.7 +/-    1.98  0.110 / 0.220
G13     117.7          21.6                8.3 +/-    2.00      17.5 +/-    2.00  0.120 / 0.250
G15     154.8          22.8                7.1 +/-    1.00      14.5 +/-    1.00  0.140 / 0.180
G21     280.9          24.5                7.0 +/-    1.61      13.8 +/-    1.61  0.090 / 0.210
G25     223.1          43.8                7.5 +/-    2.71      10.3 +/-    2.71  0.030 / 0.030
G29     335.2          63.7                6.0 +/-    0.53       6.6 +/-    0.53  0.030 / 0.030