PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-17:43:00
G01     252.2          35.7               11.3 +/-    1.48      17.6 +/-    1.48  0.040 / 0.030
G03     316.0          46.0               11.6 +/-    0.64      15.3 +/-    0.64  0.040 / 0.050
G11     240.5          13.2                9.8 +/-    2.86      25.5 +/-    2.86  0.040 / 0.030
G14     58.4           42.5               10.9 +/-    1.16      15.2 +/-    1.16  0.050 / 0.040
G22     304.8          66.9               12.4 +/-    0.80      13.4 +/-    0.80  0.040 / 0.080
G23     286.6          20.0               11.8 +/-    1.22      25.9 +/-    1.22  0.050 / 0.060
G25     40.8           11.1               10.1 +/-    1.64      27.6 +/-    1.64  0.160 / 0.230
G26     136.5          37.5               13.0 +/-    1.10      19.7 +/-    1.10  0.100 / 0.270
G31     41.1           58.7               12.1 +/-    0.45      13.9 +/-    0.45  0.050 / 0.050
G32     77.1           22.8               11.5 +/-    1.63      23.8 +/-    1.63  0.050 / 0.050