PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/21-16:57:30
G02     8.6            70.1                8.3 +/-    1.08       8.8 +/-    1.08  0.170 / 0.300
G05     158.4          46.0               11.2 +/-    1.51      14.9 +/-    1.51  0.110 / 0.420
G06     45.8           27.7                6.6 +/-    1.18      12.2 +/-    1.18  0.140 / 0.170
G12     261.9          80.0                8.9 +/-    1.53       9.0 +/-    1.53  0.090 / 0.180
G19     86.9           17.7                7.9 +/-    1.99      18.4 +/-    1.99  0.130 / 0.160
G24     219.8          13.8               10.1 +/-    1.66      25.9 +/-    1.66  0.100 / 0.120
G25     312.9          39.7                7.8 +/-    0.82      11.4 +/-    0.82  0.030 / 0.030
G29     295.3          16.7                8.4 +/-    1.77      20.0 +/-    1.77  0.040 / 0.040