PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-21:27:50
G03     202.6          48.1               11.9 +/-    1.33      15.4 +/-    1.33  0.070 / 0.080
G07     264.2          20.6                8.3 +/-    2.22      17.9 +/-    2.22  0.070 / 0.120
G09     314.2          34.7                6.9 +/-    1.74      11.0 +/-    1.74  0.100 / 0.200
G16     75.1           63.8                9.8 +/-    0.66      10.8 +/-    0.66  0.100 / 0.180
G22     185.2          32.3               10.0 +/-    1.61      16.7 +/-    1.61  0.030 / 0.040
G23     340.7          68.3                8.9 +/-    0.52       9.5 +/-    0.52  0.030 / 0.030
G26     47.6           36.3                7.6 +/-    1.09      11.8 +/-    1.09  0.190 / 0.310
G27     126.3          17.1               11.9 +/-    3.83      28.0 +/-    3.83  0.100 / 0.300