PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-17:57:20
G02     33.3           54.6                8.1 +/-    0.84       9.7 +/-    0.84  0.030 / 0.040
G05     134.8          64.5               10.4 +/-    0.45      11.4 +/-    0.45  0.030 / 0.030
G06     55.4           12.5                4.6 +/-    2.52      12.0 +/-    2.52  0.120 / 0.140
G12     195.4          65.0                7.0 +/-    0.34       7.7 +/-    0.34  0.170 / 0.150
G25     292.9          54.6                8.3 +/-    1.99       9.9 +/-    1.99  0.060 / 0.060
G29     309.4          30.3                8.3 +/-    1.31      14.4 +/-    1.31  0.040 / 0.050