PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-15:12:30
G01     313.7          26.9                8.0 +/-    1.08      15.0 +/-    1.08  0.180 / 0.240
G10     95.7           46.6                7.4 +/-    0.71       9.8 +/-    0.71  0.110 / 0.210
G11     294.7          25.4                6.6 +/-    2.19      12.8 +/-    2.19  0.050 / 0.040
G14     328.1          70.1                6.8 +/-    0.32       7.2 +/-    0.32  0.040 / 0.040
G22     306.5          20.5                6.6 +/-    1.89      14.3 +/-    1.89  0.120 / 0.200
G25     91.6           13.6                9.5 +/-    1.80      24.5 +/-    1.80  0.120 / 0.250
G31     171.4          55.7                9.7 +/-    0.41      11.4 +/-    0.41  0.030 / 0.030
G32     26.8           58.4                7.3 +/-    1.12       8.5 +/-    1.12  0.020 / 0.030