PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/16-17:58:00
G02     31.6           56.0                6.0 +/-    3.49       7.0 +/-    3.49  0.030 / 0.030
G05     138.3          63.1                7.1 +/-    6.81       7.9 +/-    6.81  0.030 / 0.030
G06     54.4           13.9               -5.4 +/-   32.23     -13.7 +/-   32.23  0.060 / 0.120
G12     197.4          67.0                5.7 +/-    2.43       6.1 +/-    2.43  0.080 / 0.120
G25     295.7          53.5                7.5 +/-    3.89       9.1 +/-    3.89  0.050 / 0.050
G29     308.1          29.0                5.3 +/-    7.45       9.5 +/-    7.45  0.040 / 0.060