PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/10-20:57:40
G02     89.4           10.3                9.2 +/-    1.42      25.5 +/-    1.42  0.110 / 0.210
G05     45.9           25.3                8.1 +/-    2.34      15.6 +/-    2.34  0.170 / 0.240
G13     86.8           34.8               10.1 +/-    0.95      16.1 +/-    0.95  0.050 / 0.100
G15     136.9          45.5               10.6 +/-    0.81      14.2 +/-    0.81  0.080 / 0.090
G20     240.5          29.7               10.0 +/-    1.78      17.6 +/-    1.78  0.090 / 0.120
G21     304.4          40.2                8.7 +/-    0.99      12.6 +/-    0.99  0.070 / 0.110
G25     204.9          19.4                9.4 +/-    1.84      20.9 +/-    1.84  0.030 / 0.050
G26     297.3          19.8                7.8 +/-    0.90      17.1 +/-    0.90  0.030 / 0.050
G29     132.9          82.8                8.0 +/-    0.32       8.1 +/-    0.32  0.110 / 0.310