PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-05:57:40
G01     310.4          30.4                3.1 +/-    0.77       5.4 +/-    0.77  0.020 / 0.020
G10     100.6          44.3                4.3 +/-    0.65       5.8 +/-    0.65  0.030 / 0.020
G11     284.2          29.7                5.1 +/-    1.43       9.0 +/-    1.43  0.040 / 0.030
G14     351.0          68.3                2.1 +/-    0.46       2.2 +/-    0.46  0.040 / 0.040
G18     113.6          19.5                3.7 +/-    1.75       8.2 +/-    1.75  0.060 / 0.110
G22     308.0          23.4                3.3 +/-    1.12       6.6 +/-    1.12  0.090 / 0.130
G25     82.0           14.6                4.6 +/-    2.14      11.5 +/-    2.14  0.080 / 0.110
G31     170.0          60.1                5.3 +/-    0.57       6.0 +/-    0.57  0.090 / 0.100
G32     30.0           56.3                3.7 +/-    1.03       4.3 +/-    1.03  0.110 / 0.180