PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-11:13:00
G03     192.8          22.2                4.2 +/-    1.93       8.7 +/-    1.93  0.030 / 0.020
G07     293.3          40.5                3.2 +/-    2.18       4.6 +/-    2.18  0.020 / 0.020
G08     138.7          29.4                5.3 +/-    2.23       9.4 +/-    2.23  0.070 / 0.070
G09     321.4          65.8                3.2 +/-    0.74       3.4 +/-    0.74  0.050 / 0.090
G16     42.6           39.4               16.5 +/-   16.36      24.3 +/-   16.36  0.020 / 0.020
G23     112.6          80.3                2.5 +/-    0.36       2.5 +/-    0.36  0.020 / 0.020
G26     43.4           12.3              -34.6 +/-   76.68     -91.8 +/-   76.68  0.110 / 0.320
G27     97.1           33.9               -7.9 +/-   12.21     -12.8 +/-   12.21  0.160 / 0.310
G30     273.1          11.1              -10.1 +/-   24.25     -27.4 +/-   24.25  0.050 / 0.070