PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/23-02:13:00
G02     18.4           67.1                9.6 +/-    0.70      10.3 +/-    0.70  0.050 / 0.150
G05     154.8          48.2               12.0 +/-    1.57      15.5 +/-    1.57  0.060 / 0.110
G06     46.3           28.1                9.1 +/-    1.52      16.5 +/-    1.52  0.030 / 0.030
G12     256.8          79.7                9.8 +/-    0.74      10.0 +/-    0.74  0.030 / 0.020
G19     86.8           20.0               10.8 +/-    2.71      23.9 +/-    2.71  0.050 / 0.050
G24     218.7          13.3               12.6 +/-    4.10      32.6 +/-    4.10  0.050 / 0.050
G25     312.8          40.4               10.5 +/-    0.93      15.2 +/-    0.93  0.160 / 0.450
G29     296.0          16.8                9.8 +/-    1.18      23.3 +/-    1.18  0.200 / 0.420