PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-16:12:40
G01     298.2          37.9                7.4 +/-    1.02      11.1 +/-    1.02  0.090 / 0.110
G03     310.3          15.1                5.7 +/-    1.59      14.0 +/-    1.59  0.100 / 0.100
G10     114.7          33.7                9.1 +/-    1.11      14.9 +/-    1.11  0.060 / 0.120
G11     274.8          26.8                6.8 +/-    1.10      12.8 +/-    1.10  0.060 / 0.140
G14     11.4           63.0                7.2 +/-    0.93       7.9 +/-    0.93  0.040 / 0.030
G22     312.8          34.7                6.3 +/-    1.53      10.1 +/-    1.53  0.030 / 0.030
G25     73.7           18.7                7.2 +/-    0.46      16.4 +/-    0.46  0.050 / 0.070
G31     149.6          74.8                8.5 +/-    1.15       8.8 +/-    1.15  0.040 / 0.070
G32     46.0           45.5                5.9 +/-    1.00       7.9 +/-    1.00  0.110 / 0.370