PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/20-00:57:40
G10     261.5          34.8               12.6 +/-    1.43      20.0 +/-    1.43  0.130 / 0.250
G13     44.7           22.2                9.5 +/-    1.58      19.9 +/-    1.58  0.220 / 0.410
G15     68.1           54.4               10.1 +/-    0.42      12.1 +/-    0.42  0.210 / 0.470
G16     282.6          13.9               10.4 +/-    1.23      26.6 +/-    1.23  0.150 / 0.320
G20     272.6          43.3               11.2 +/-    1.03      15.5 +/-    1.03  0.060 / 0.060
G21     349.4          67.9                9.8 +/-    0.83      10.5 +/-    0.83  0.050 / 0.040
G24     123.5          11.2               15.2 +/-    3.10      41.2 +/-    3.10  0.080 / 0.100
G26     255.7          10.3               11.6 +/-    2.51      32.1 +/-    2.51  0.100 / 0.090
G27     320.7          14.6                8.6 +/-    2.89      21.5 +/-    2.89  0.110 / 0.350
G29     167.7          37.9               13.8 +/-    0.96      20.8 +/-    0.96  0.110 / 0.390