PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/21-16:42:40
G02     353.3          75.2                8.0 +/-    0.52       8.3 +/-    0.52  0.150 / 0.300
G05     162.3          39.1               10.8 +/-    1.21      15.9 +/-    1.21  0.120 / 0.460
G06     43.2           33.6                7.0 +/-    1.10      11.5 +/-    1.10  0.020 / 0.030
G12     297.2          76.6                8.0 +/-    0.72       8.2 +/-    0.72  0.020 / 0.040
G17     89.3           10.4                7.4 +/-    2.51      20.4 +/-    2.51  0.060 / 0.120
G19     81.1           21.7                7.8 +/-    1.00      16.6 +/-    1.00  0.060 / 0.120
G24     224.5          18.4               10.7 +/-    2.77      24.5 +/-    2.77  0.040 / 0.080
G25     315.6          33.6                7.4 +/-    1.04      12.1 +/-    1.04  0.050 / 0.070
G29     290.3          12.5               10.5 +/-    2.37      27.6 +/-    2.37  0.050 / 0.080