PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/16-17:57:50
G02     82.8           13.9               10.4 +/-    1.35      26.5 +/-    1.35  0.040 / 0.080
G05     44.6           36.8                8.4 +/-    0.41      12.9 +/-    0.41  0.040 / 0.080
G13     102.6          33.0               12.4 +/-    0.68      20.4 +/-    0.68  0.110 / 0.380
G15     145.4          36.7               13.5 +/-    0.99      20.8 +/-    0.99  0.100 / 0.420
G18     230.4          26.7               11.8 +/-    1.60      22.2 +/-    1.60  0.040 / 0.050
G20     326.3          85.0                8.7 +/-    0.60       8.7 +/-    0.60  0.060 / 0.040
G21     296.6          36.8                9.7 +/-    1.26      14.9 +/-    1.26  0.070 / 0.110
G25     208.2          26.0               12.9 +/-    0.89      24.6 +/-    0.89  0.060 / 0.130
G26     311.0          15.0                9.3 +/-    2.14      23.1 +/-    2.14  0.040 / 0.140
G29     76.9           85.2               10.4 +/-    0.63      10.4 +/-    0.63  0.050 / 0.130