PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-20:27:40
G03     196.9          39.2               12.8 +/-    2.53      18.8 +/-    2.53  0.110 / 0.230
G07     271.0          25.3               14.7 +/-    2.13      28.5 +/-    2.13  0.090 / 0.250
G08     156.3          10.7               -2.1 +/-   49.13      -5.9 +/-   49.13  0.040 / 0.060
G09     317.2          41.7               12.2 +/-    2.01      17.2 +/-    2.01  0.040 / 0.060
G16     58.6           58.2               10.1 +/-    0.96      11.6 +/-    0.96  0.200 / 0.400
G22     182.4          23.9               12.7 +/-    4.79      25.5 +/-    4.79  0.180 / 0.390
G23     357.0          75.9               10.5 +/-    0.43      10.8 +/-    0.43  0.110 / 0.170
G26     44.4           28.8                8.2 +/-    1.60      14.7 +/-    1.60  0.100 / 0.180
G27     119.7          22.4               15.0 +/-    1.22      31.2 +/-    1.22  0.060 / 0.100