PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-14:57:40
G03     311.2          56.8                6.3 +/-    1.89       7.4 +/-    1.89  0.070 / 0.080
G14     68.0           37.6                7.5 +/-    0.91      11.4 +/-    0.91  0.080 / 0.110
G16     157.7          27.8               11.3 +/-    2.22      20.7 +/-    2.22  0.070 / 0.160
G18     215.2          20.4                8.9 +/-    2.11      19.4 +/-    2.11  0.110 / 0.190
G22     272.8          76.6                8.8 +/-    0.73       9.0 +/-    0.73  0.030 / 0.030
G23     295.5          28.2                5.5 +/-    2.93      10.1 +/-    2.93  0.030 / 0.030
G26     123.8          45.9               11.7 +/-    0.80      15.6 +/-    0.80  0.110 / 0.150
G31     41.0           47.0                5.8 +/-    0.79       7.6 +/-    0.79  0.100 / 0.140
G32     85.9           15.8                8.4 +/-    1.64      20.4 +/-    1.64  0.060 / 0.070