PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-18:27:30
G02     54.3           37.5                8.6 +/-    1.01      13.1 +/-    1.01  0.160 / 0.360
G05     66.2           65.4                9.1 +/-    0.46       9.9 +/-    0.46  0.110 / 0.300
G12     185.1          37.7               10.7 +/-    2.46      16.2 +/-    2.46  0.100 / 0.090
G13     130.0          12.1               11.6 +/-    2.36      30.8 +/-    2.36  0.050 / 0.080
G21     268.0          13.8               10.8 +/-    2.57      27.8 +/-    2.57  0.040 / 0.060
G25     245.1          54.8                9.7 +/-    0.46      11.5 +/-    0.46  0.050 / 0.070
G29     325.8          50.4                9.7 +/-    1.19      12.1 +/-    1.19  0.080 / 0.460