PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-04:27:50
G08     279.6          22.6                5.9 +/-    0.64      12.1 +/-    0.64  0.040 / 0.020
G10     30.4           62.8                3.8 +/-    0.76       4.2 +/-    0.76  0.030 / 0.020
G14     243.5          58.0                5.9 +/-    1.74       6.8 +/-    1.74  0.040 / 0.020
G18     75.6           46.5                4.8 +/-    1.10       6.4 +/-    1.10  0.040 / 0.030
G24     48.0           20.8                6.1 +/-    2.75      13.2 +/-    2.75  0.160 / 0.100
G27     241.6          24.7                5.3 +/-    1.85      10.5 +/-    1.85  0.310 / 0.120
G31     181.0          16.7                5.4 +/-    2.20      13.0 +/-    2.20  0.170 / 0.240
G32     277.7          74.4                4.9 +/-    0.63       5.1 +/-    0.63  0.150 / 0.200