PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/12-16:57:30
G02     312.2          80.1                7.6 +/-    0.75       7.7 +/-    0.75  0.030 / 0.030
G05     166.4          29.5                9.9 +/-    1.59      17.5 +/-    1.59  0.020 / 0.030
G06     40.6           42.7                7.4 +/-    0.95      10.3 +/-    0.95  0.100 / 0.170
G12     316.2          66.9                8.4 +/-    0.66       9.1 +/-    0.66  0.180 / 0.280
G17     81.0           16.8                7.8 +/-    2.57      18.6 +/-    2.57  0.090 / 0.180
G19     72.2           27.7                7.0 +/-    1.56      12.8 +/-    1.56  0.110 / 0.160
G24     232.0          25.1               10.4 +/-    1.70      20.3 +/-    1.70  0.080 / 0.120
G25     317.4          24.6                7.0 +/-    1.59      13.8 +/-    1.59  0.090 / 0.100