PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-21:58:00
G02     39.7           49.2                8.1 +/-    0.97      10.3 +/-    0.97  0.040 / 0.060
G05     118.8          67.7                9.9 +/-    0.26      10.6 +/-    0.26  0.040 / 0.050
G06     57.8           10.2                7.8 +/-    2.11      21.6 +/-    2.11  0.050 / 0.060
G12     194.3          60.7               11.1 +/-    0.50      12.5 +/-    0.50  0.060 / 0.050
G25     283.7          57.1               13.0 +/-    2.29      15.1 +/-    2.29  0.040 / 0.040
G29     313.7          35.5               10.0 +/-    0.94      15.7 +/-    0.94  0.030 / 0.040