PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-14:27:50
G03     201.1          45.7               10.5 +/-    1.74      14.0 +/-    1.74  0.060 / 0.090
G07     266.2          21.8                9.5 +/-    2.62      20.0 +/-    2.62  0.060 / 0.110
G09     315.5          37.7                8.3 +/-    1.04      12.6 +/-    1.04  0.030 / 0.040
G16     65.2           59.8                9.3 +/-    0.42      10.6 +/-    0.42  0.030 / 0.040
G22     181.6          26.8               10.4 +/-    2.20      19.6 +/-    2.20  0.030 / 0.040
G23     355.0          73.7                8.4 +/-    0.55       8.8 +/-    0.55  0.030 / 0.050
G26     45.8           32.0                7.9 +/-    0.69      13.3 +/-    0.69  0.110 / 0.230
G27     125.0          18.6                9.7 +/-    1.38      22.2 +/-    1.38  0.070 / 0.190