PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/03-21:57:50
G10     265.3          37.4               11.1 +/-    1.33      16.9 +/-    1.33  0.160 / 0.190
G13     42.6           19.3                7.2 +/-    4.09      16.0 +/-    4.09  0.180 / 0.200
G15     64.6           53.6                8.9 +/-    0.73      10.8 +/-    0.73  0.140 / 0.400
G16     278.6          13.0               10.1 +/-    1.46      26.3 +/-    1.46  0.180 / 0.480
G20     263.6          21.9               14.6 +/-    1.10      30.6 +/-    1.10  0.130 / 0.280
G21     355.8          70.2                9.3 +/-    1.12       9.8 +/-    1.12  0.120 / 0.310
G24     119.9          13.5               10.9 +/-    2.44      28.2 +/-    2.44  0.050 / 0.040
G27     319.5          17.2                8.8 +/-    1.72      20.7 +/-    1.72  0.050 / 0.040
G29     168.2          34.2               10.1 +/-    1.70      16.3 +/-    1.70  0.140 / 0.440