PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/28-21:12:50
G02     80.1           17.2               10.4 +/-    0.64      24.5 +/-    0.64  0.070 / 0.160
G05     44.4           41.6               11.9 +/-    0.64      16.8 +/-    0.64  0.090 / 0.140
G13     105.6          31.8               14.4 +/-    1.02      24.2 +/-    1.02  0.050 / 0.120
G15     148.9          33.8               16.1 +/-    0.50      26.0 +/-    0.50  0.050 / 0.140
G18     228.8          23.4               18.0 +/-    1.21      36.4 +/-    1.21  0.130 / 0.430
G20     313.6          86.1               12.8 +/-    0.69      12.9 +/-    0.69  0.130 / 0.440
G21     293.3          33.8               12.7 +/-    1.51      20.6 +/-    1.51  0.060 / 0.060
G25     207.7          27.2               15.8 +/-    1.26      29.4 +/-    1.26  0.060 / 0.070
G26     311.3          15.5               10.9 +/-    1.76      26.9 +/-    1.76  0.030 / 0.030
G29     15.7           84.2               10.9 +/-    0.42      11.0 +/-    0.42  0.030 / 0.030