PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/06-16:42:40
G03     201.4          48.4               10.8 +/-    0.69      13.9 +/-    0.69  0.110 / 0.100
G07     263.1          19.6               10.8 +/-    1.10      24.0 +/-    1.10  0.070 / 0.120
G09     313.7          33.8                7.9 +/-    1.31      12.8 +/-    1.31  0.040 / 0.030
G16     73.8           62.4                9.7 +/-    0.55      10.8 +/-    0.55  0.030 / 0.040
G22     182.8          30.8               10.9 +/-    2.62      18.7 +/-    2.62  0.040 / 0.040
G23     345.2          69.7                8.9 +/-    0.53       9.4 +/-    0.53  0.030 / 0.040
G26     47.6           35.6                9.2 +/-    0.78      14.5 +/-    0.78  0.040 / 0.040
G27     127.7          16.1               11.9 +/-    2.00      28.9 +/-    2.00  0.030 / 0.050