PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/11-18:27:50
G02     35.9           52.5                9.7 +/-    1.00      11.8 +/-    1.00  0.040 / 0.050
G05     128.8          66.3               12.1 +/-    0.60      13.1 +/-    0.60  0.040 / 0.050
G06     56.7           10.9                8.6 +/-    1.43      23.6 +/-    1.43  0.050 / 0.050
G12     193.7          62.4               11.3 +/-    0.48      12.6 +/-    0.48  0.050 / 0.060
G25     288.8          55.8                9.7 +/-    2.01      11.5 +/-    2.01  0.150 / 0.230
G29     311.2          32.3               10.0 +/-    1.24      16.7 +/-    1.24  0.220 / 0.360