PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-14:27:50
G01     222.8          13.4                5.7 +/-   20.02      14.6 +/-   20.02  0.100 / 0.220
G03     264.6          71.1               10.4 +/-    0.59      10.9 +/-    0.59  0.110 / 0.250
G09     297.0          10.3              -13.4 +/-   24.47     -37.0 +/-   24.47  0.050 / 0.080
G14     89.7           24.2                9.0 +/-    1.10      18.0 +/-    1.10  0.080 / 0.070
G16     139.7          50.8               11.6 +/-    1.08      14.5 +/-    1.08  0.030 / 0.060
G22     195.2          62.9               10.3 +/-    0.66      11.4 +/-    0.66  0.030 / 0.050
G23     314.4          45.1                7.8 +/-    0.83      10.5 +/-    0.83  0.180 / 0.430
G26     84.5           53.7                9.0 +/-    0.82      10.9 +/-    0.82  0.230 / 0.450
G31     47.9           26.0                7.7 +/-    0.64      14.8 +/-    0.64  0.040 / 0.070