PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-19:57:40
G03     199.8          45.4               13.8 +/-    1.49      18.4 +/-    1.49  0.030 / 0.050
G07     265.7          21.6               12.2 +/-    0.55      25.8 +/-    0.55  0.040 / 0.040
G09     314.9          36.2               11.8 +/-    1.78      18.3 +/-    1.78  0.060 / 0.130
G16     69.4           62.1               13.7 +/-    0.41      15.3 +/-    0.41  0.070 / 0.130
G22     183.9          29.7               12.8 +/-    1.22      22.5 +/-    1.22  0.140 / 0.280
G23     345.2          70.7               11.7 +/-    0.70      12.3 +/-    0.70  0.100 / 0.270
G26     46.5           34.0                9.2 +/-    0.48      14.8 +/-    0.48  0.040 / 0.040
G27     124.9          18.3               13.4 +/-    1.43      30.6 +/-    1.43  0.040 / 0.040