PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/20-04:27:50
G01     271.9          41.2                9.1 +/-    2.23      13.0 +/-    2.23  0.050 / 0.050
G03     315.5          27.1                5.6 +/-    2.96      10.5 +/-    2.96  0.040 / 0.040
G10     129.3          17.3                7.4 +/-    1.08      17.4 +/-    1.08  0.080 / 0.070
G11     250.0          20.4               10.7 +/-    5.11      23.3 +/-    5.11  0.050 / 0.070
G14     41.3           51.3                7.6 +/-    1.15       9.5 +/-    1.15  0.190 / 0.250
G18     234.6          39.6                9.9 +/-    1.21      14.4 +/-    1.21  0.190 / 0.450
G22     314.1          50.0                7.4 +/-    1.14       9.3 +/-    1.14  0.050 / 0.060
G25     52.4           16.4                5.3 +/-    2.28      12.7 +/-    2.28  0.050 / 0.050
G31     54.9           72.1                7.5 +/-    0.42       7.8 +/-    0.42  0.080 / 0.190
G32     64.6           31.3                6.5 +/-    1.72      11.1 +/-    1.72  0.250 / 0.230