PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-20:28:00
G03     207.1          54.6               12.3 +/-    0.66      14.7 +/-    0.66  0.060 / 0.070
G07     258.7          16.4                8.9 +/-    3.14      21.3 +/-    3.14  0.050 / 0.060
G09     311.1          29.0                9.1 +/-    1.35      16.4 +/-    1.35  0.050 / 0.050
G16     91.9           65.2               10.9 +/-    0.48      11.9 +/-    0.48  0.040 / 0.030
G22     186.9          38.9               12.5 +/-    1.15      18.5 +/-    1.15  0.150 / 0.250
G23     333.6          62.7               10.9 +/-    1.10      12.1 +/-    1.10  0.160 / 0.260
G26     51.7           41.5                7.9 +/-    0.61      11.2 +/-    0.61  0.030 / 0.040
G27     131.5          12.5               10.6 +/-    2.26      28.1 +/-    2.26  0.030 / 0.040