PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/23-17:58:00
G01     298.8          37.6                7.7 +/-    2.63      11.6 +/-    2.63  0.050 / 0.090
G03     309.8          13.3                6.4 +/-    2.48      16.6 +/-    2.48  0.060 / 0.100
G10     114.1          34.3               10.0 +/-    1.17      16.1 +/-    1.17  0.100 / 0.170
G11     274.5          27.2                8.9 +/-    1.40      16.6 +/-    1.40  0.080 / 0.170
G14     11.9           63.0                7.9 +/-    0.62       8.7 +/-    0.62  0.070 / 0.070
G22     312.4          33.1                6.9 +/-    0.91      11.3 +/-    0.91  0.110 / 0.070
G25     74.0           18.5                9.5 +/-    1.11      21.6 +/-    1.11  0.030 / 0.030
G31     154.5          73.8               10.1 +/-    0.69      10.5 +/-    0.69  0.020 / 0.030
G32     44.9           46.4                8.8 +/-    1.00      11.7 +/-    1.00  0.060 / 0.060