PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-19:12:30
G03     202.9          50.8               11.2 +/-    0.56      14.0 +/-    0.56  0.080 / 0.100
G07     261.1          18.2               11.8 +/-    1.11      27.2 +/-    1.11  0.080 / 0.100
G09     312.5          31.5                8.9 +/-    1.07      15.2 +/-    1.07  0.230 / 0.330
G16     81.9           64.2               10.6 +/-    0.63      11.6 +/-    0.63  0.190 / 0.360
G22     185.2          35.0               11.5 +/-    1.14      18.3 +/-    1.14  0.040 / 0.040
G23     338.2          66.1                9.4 +/-    0.54      10.2 +/-    0.54  0.050 / 0.040
G26     49.3           38.5                8.4 +/-    0.80      12.6 +/-    0.80  0.040 / 0.050
G27     129.3          14.5               12.4 +/-    2.28      31.3 +/-    2.28  0.040 / 0.050