PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-15:27:50
G02     33.2           54.6                7.2 +/-    0.95       8.6 +/-    0.95  0.040 / 0.040
G05     140.7          63.1                8.7 +/-    0.76       9.7 +/-    0.76  0.060 / 0.050
G06     54.8           13.1                5.1 +/-    4.24      13.3 +/-    4.24  0.030 / 0.030
G12     193.7          65.3                7.3 +/-    0.47       8.0 +/-    0.47  0.020 / 0.030
G25     294.7          53.9                8.4 +/-    2.74      10.2 +/-    2.74  0.070 / 0.230
G29     308.2          28.9                6.0 +/-    0.59      10.8 +/-    0.59  0.110 / 0.130