PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/22-18:27:40
G02     52.9           38.7                7.6 +/-    1.71      11.3 +/-    1.71  0.320 / 0.430
G05     70.1           66.6                8.8 +/-    0.39       9.5 +/-    0.39  0.210 / 0.360
G12     185.5          39.7               11.8 +/-    1.07      17.3 +/-    1.07  0.170 / 0.500
G13     131.3          10.9                8.7 +/-   16.03      23.8 +/-   16.03  0.300 / 0.390
G21     266.5          12.7                6.6 +/-   16.24      17.3 +/-   16.24  0.050 / 0.090
G25     248.4          55.7                9.7 +/-    2.41      11.5 +/-    2.41  0.060 / 0.060
G29     324.6          48.8                8.6 +/-    0.58      11.0 +/-    0.58  0.050 / 0.050