PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/28-11:12:30
G08     297.4          20.9                5.5 +/-    1.17      11.7 +/-    1.17  0.080 / 0.070
G10     7.0            63.1                5.0 +/-    1.22       5.5 +/-    1.22  0.090 / 0.090
G14     229.9          43.7                8.4 +/-    1.62      11.6 +/-    1.62  0.050 / 0.070
G20     92.9           9.7                 3.7 +/-    8.47      10.4 +/-    8.47  0.040 / 0.080
G21     146.4          39.3                6.3 +/-    1.48       9.2 +/-    1.48  0.110 / 0.090
G24     56.2           25.8                5.6 +/-    2.21      10.8 +/-    2.21  0.090 / 0.110
G27     253.3          31.4                6.4 +/-    3.08      11.0 +/-    3.08  0.190 / 0.120
G32     247.9          69.3                4.7 +/-    0.47       5.0 +/-    0.47  0.240 / 0.230