PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-19:27:40
G01     243.0          30.7               14.4 +/-    1.69      24.9 +/-    1.69  0.030 / 0.040
G03     312.9          53.1               12.1 +/-    1.33      14.7 +/-    1.33  0.030 / 0.040
G14     67.7           36.8               10.5 +/-    0.64      16.1 +/-    0.64  0.110 / 0.170
G16     160.7          24.7               15.0 +/-    1.58      29.6 +/-    1.58  0.090 / 0.150
G22     288.7          72.8               13.3 +/-    0.72      13.8 +/-    0.72  0.080 / 0.120
G23     292.7          24.5               12.1 +/-    1.60      23.8 +/-    1.60  0.080 / 0.150
G26     128.6          44.1               14.9 +/-    1.16      20.3 +/-    1.16  0.020 / 0.040
G31     40.2           50.8                9.9 +/-    0.48      12.3 +/-    0.48  0.020 / 0.040
G32     84.0           17.9               11.2 +/-    0.68      25.9 +/-    0.68  0.120 / 0.240