PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-14:57:50
G03     217.8          62.7               11.9 +/-    0.99      13.2 +/-    0.99  0.040 / 0.040
G07     252.2          10.8               -6.1 +/-   11.53     -16.7 +/-   11.53  0.050 / 0.040
G09     307.0          22.7               10.0 +/-    2.67      20.6 +/-    2.67  0.110 / 0.280
G14     103.9          13.3                7.7 +/-    1.93      20.0 +/-    1.93  0.170 / 0.310
G16     109.1          62.9               10.4 +/-    0.68      11.6 +/-    0.68  0.030 / 0.050
G22     185.7          44.5               11.2 +/-    0.62      15.2 +/-    0.62  0.030 / 0.050
G23     329.6          58.6                9.7 +/-    0.57      11.2 +/-    0.57  0.120 / 0.430
G26     58.5           46.3                8.5 +/-    1.01      11.3 +/-    1.01  0.050 / 0.070
G31     56.4           12.9                6.7 +/-    1.53      17.5 +/-    1.53  0.050 / 0.060