PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-15:57:30
G01     313.7          26.9                6.5 +/-    1.59      12.1 +/-    1.59  0.030 / 0.060
G10     95.6           46.7                7.4 +/-    0.50       9.8 +/-    0.50  0.050 / 0.050
G11     294.3          25.7                8.0 +/-    2.28      15.5 +/-    2.28  0.130 / 0.270
G14     329.2          70.1                7.4 +/-    0.64       7.9 +/-    0.64  0.160 / 0.250
G22     306.4          20.0                9.1 +/-    2.42      20.0 +/-    2.42  0.130 / 0.230
G25     91.5           13.6                9.2 +/-    1.56      23.7 +/-    1.56  0.150 / 0.270
G31     171.8          55.4                9.9 +/-    1.51      11.8 +/-    1.51  0.040 / 0.060
G32     26.5           58.5                7.0 +/-    0.42       8.1 +/-    0.42  0.040 / 0.060