PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/25-10:57:40
G01     315.2          25.1                4.7 +/-    1.99       9.2 +/-    1.99  0.040 / 0.050
G10     92.6           48.0                6.3 +/-    0.45       8.2 +/-    0.45  0.040 / 0.050
G11     295.9          25.5                5.0 +/-    2.00       9.7 +/-    2.00  0.120 / 0.360
G14     314.0          69.8                5.6 +/-    0.60       6.0 +/-    0.60  0.120 / 0.400
G18     295.5          45.2                6.7 +/-    1.23       9.0 +/-    1.23  0.030 / 0.040
G22     306.4          22.0                3.0 +/-    2.23       6.2 +/-    2.23  0.030 / 0.050
G25     94.0           12.5                4.1 +/-    0.98      11.0 +/-    0.98  0.080 / 0.130
G31     170.9          53.9                9.9 +/-    1.41      11.9 +/-    1.41  0.100 / 0.150
G32     24.9           59.6                5.0 +/-    0.58       5.7 +/-    0.58  0.120 / 0.210