PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/20-21:42:30
G03     208.0          54.5               10.3 +/-    0.96      12.3 +/-    0.96  0.060 / 0.060
G07     259.3          16.9                9.7 +/-    3.03      23.0 +/-    3.03  0.050 / 0.070
G09     311.5          29.6                8.2 +/-    0.93      14.5 +/-    0.93  0.040 / 0.040
G16     92.1           65.6                0.8 +/-    1.06       0.9 +/-    1.06  0.040 / 0.030
G22     187.2          38.7               11.1 +/-    1.00      16.5 +/-    1.00  0.240 / 0.230
G23     333.3          62.6                9.1 +/-    0.58      10.1 +/-    0.58  0.080 / 0.140
G26     51.5           41.6                8.4 +/-    0.84      11.9 +/-    0.84  0.220 / 0.230
G27     131.0          12.9               12.0 +/-    2.18      31.3 +/-    2.18  0.240 / 0.220