PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/26-21:42:20
G02     40.2           48.9                7.6 +/-    0.83       9.7 +/-    0.83  0.050 / 0.040
G05     117.3          67.9                9.7 +/-    0.39      10.4 +/-    0.39  0.060 / 0.050
G06     58.2           9.7                 7.6 +/-    1.71      21.3 +/-    1.71  0.060 / 0.060
G12     193.7          60.0               11.3 +/-    0.36      12.8 +/-    0.36  0.070 / 0.060
G25     282.6          57.2               13.1 +/-    1.91      15.2 +/-    1.91  0.030 / 0.040
G29     314.0          35.8                9.4 +/-    0.72      14.7 +/-    0.72  0.030 / 0.040