PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/24-19:13:00
G03     207.9          56.5               13.9 +/-    0.38      16.3 +/-    0.38  0.040 / 0.070
G07     256.8          14.8               11.8 +/-    1.11      29.4 +/-    1.11  0.060 / 0.070
G09     309.9          26.9                9.7 +/-    0.75      18.1 +/-    0.75  0.200 / 0.390
G16     97.1           64.9               14.2 +/-    1.29      15.5 +/-    1.29  0.280 / 0.470
G22     187.0          40.8               13.6 +/-    0.66      19.5 +/-    0.66  0.180 / 0.340
G23     332.0          61.1               11.3 +/-    0.55      12.7 +/-    0.55  0.180 / 0.310
G26     53.4           42.9               10.9 +/-    1.01      15.2 +/-    1.01  0.030 / 0.030
G27     133.5          10.8               11.8 +/-   33.28      32.4 +/-   33.28  0.040 / 0.030
G31     59.5           9.8                 8.6 +/-    1.65      24.1 +/-    1.65  0.040 / 0.040