PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-00:28:10
G02     32.4           55.6                8.6 +/-    0.70      10.2 +/-    0.70  0.070 / 0.070
G05     138.6          61.5                8.8 +/-    0.75       9.8 +/-    0.75  0.050 / 0.060
G06     52.2           18.4                7.5 +/-    0.60      17.2 +/-    0.60  0.050 / 0.070
G12     207.1          71.1                7.6 +/-    0.64       8.0 +/-    0.64  0.040 / 0.060
G25     298.4          52.9                6.3 +/-    0.86       7.7 +/-    0.86  0.030 / 0.030
G29     307.9          30.0                7.8 +/-    1.28      13.8 +/-    1.28  0.030 / 0.040