PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-20:27:20
G02     29.7           58.1                8.0 +/-    0.42       9.2 +/-    0.42  0.050 / 0.050
G05     141.8          60.8                9.4 +/-    1.30      10.6 +/-    1.30  0.030 / 0.050
G06     53.4           15.4                6.5 +/-    2.14      16.1 +/-    2.14  0.040 / 0.040
G12     193.1          67.2                6.8 +/-    1.14       7.3 +/-    1.14  0.040 / 0.040
G19     97.7           13.2                9.7 +/-    1.14      25.3 +/-    1.14  0.030 / 0.050
G25     298.9          52.8                7.4 +/-    0.79       9.1 +/-    0.79  0.030 / 0.050
G29     305.6          25.6                7.5 +/-    2.55      14.4 +/-    2.55  0.050 / 0.070