PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-20:58:10
G02     55.6           36.9               10.3 +/-    1.20      15.9 +/-    1.20  0.030 / 0.070
G05     69.9           68.0               11.6 +/-    0.48      12.4 +/-    0.48  0.030 / 0.060
G12     185.4          35.4               15.5 +/-    2.31      24.5 +/-    2.31  0.110 / 0.370
G13     132.3          12.9               14.9 +/-    1.60      38.9 +/-    1.60  0.110 / 0.380
G20     205.2          57.6               14.9 +/-    1.16      17.2 +/-    1.16  0.030 / 0.080
G21     268.4          15.6               13.8 +/-    1.48      33.8 +/-    1.48  0.040 / 0.090
G25     233.7          53.3               13.3 +/-    0.90      16.2 +/-    0.90  0.030 / 0.050
G29     327.9          53.8               10.3 +/-    0.73      12.4 +/-    0.73  0.030 / 0.050