PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-12:27:40
G02     58.5           32.4                5.4 +/-    1.82       9.0 +/-    1.82  0.030 / 0.020
G05     64.9           65.9                7.1 +/-    0.73       7.7 +/-    0.73  0.040 / 0.030
G12     182.0          33.0                6.1 +/-    1.22      10.1 +/-    1.22  0.070 / 0.080
G13     128.3          13.3                7.8 +/-    2.93      20.2 +/-    2.93  0.070 / 0.100
G15     162.9          12.0                3.9 +/-    4.23      10.3 +/-    4.23  0.040 / 0.050
G21     270.0          15.9                5.3 +/-    4.25      12.8 +/-    4.25  0.040 / 0.040
G25     240.5          53.6                6.8 +/-    4.01       8.3 +/-    4.01  0.170 / 0.580
G29     326.4          51.2                5.7 +/-    1.24       7.1 +/-    1.24  0.210 / 0.480