PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-21:12:40
G03     206.3          53.0               11.6 +/-    0.83      14.1 +/-    0.83  0.050 / 0.070
G07     260.2          17.6               11.2 +/-    2.29      26.1 +/-    2.29  0.050 / 0.080
G09     312.0          30.5                7.9 +/-    1.21      13.7 +/-    1.21  0.210 / 0.200
G16     87.8           65.3               10.7 +/-    0.80      11.7 +/-    0.80  0.180 / 0.240
G22     186.6          37.3               11.2 +/-    1.35      17.1 +/-    1.35  0.110 / 0.120
G23     335.0          64.0                8.7 +/-    0.99       9.6 +/-    0.99  0.080 / 0.150
G26     50.5           40.3                7.1 +/-    1.44      10.3 +/-    1.44  0.040 / 0.040
G27     130.1          13.8               13.4 +/-    2.82      34.2 +/-    2.82  0.030 / 0.030