PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/09-02:12:30
G02     275.6          81.6                9.0 +/-    0.58       9.1 +/-    0.58  0.030 / 0.040
G05     168.1          22.9               12.4 +/-    5.77      25.5 +/-    5.77  0.030 / 0.030
G06     39.8           52.3                9.2 +/-    0.70      11.3 +/-    0.70  0.080 / 0.140
G12     320.7          58.0                9.7 +/-    0.40      11.2 +/-    0.40  0.070 / 0.120
G17     74.5           22.0                8.4 +/-    1.63      17.5 +/-    1.63  0.280 / 0.350
G19     63.2           35.2                9.8 +/-    1.47      15.6 +/-    1.47  0.160 / 0.360
G24     239.1          31.0               11.1 +/-    1.72      19.1 +/-    1.72  0.110 / 0.110
G25     317.6          17.0                6.8 +/-    1.80      16.0 +/-    1.80  0.140 / 0.140