PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-09:43:10
G03     192.7          21.9                4.7 +/-    3.19       9.9 +/-    3.19  0.030 / 0.020
G07     293.4          40.3               10.2 +/-   10.54      14.7 +/-   10.54  0.020 / 0.020
G08     138.3          29.8                5.4 +/-    1.60       9.5 +/-    1.60  0.020 / 0.020
G09     321.7          67.4                2.8 +/-    0.56       3.1 +/-    0.56  0.020 / 0.020
G16     42.6           39.8               12.2 +/-   16.08      17.7 +/-   16.08  0.130 / 0.290
G23     114.1          80.3                3.8 +/-    0.61       3.8 +/-    0.61  0.130 / 0.310
G26     43.5           12.7              -20.1 +/-   70.86     -52.9 +/-   70.86  0.090 / 0.120
G27     96.6           34.0               -2.9 +/-   13.62      -4.6 +/-   13.62  0.070 / 0.100
G30     273.6          11.6               -4.5 +/-   28.23     -12.1 +/-   28.23  0.050 / 0.060