PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/01-04:58:00
G01     258.3          38.2                8.5 +/-    2.65      12.7 +/-    2.65  0.210 / 0.240
G03     316.4          35.5                6.1 +/-    0.99       9.5 +/-    0.99  0.180 / 0.260
G10     134.6          10.4                6.9 +/-    2.32      19.2 +/-    2.32  0.060 / 0.070
G11     240.2          16.3                9.8 +/-    1.16      23.7 +/-    1.16  0.050 / 0.070
G14     55.2           43.2                5.6 +/-    0.59       7.8 +/-    0.59  0.040 / 0.040
G22     310.8          60.2                6.3 +/-    1.16       7.2 +/-    1.16  0.050 / 0.040
G25     41.7           11.1                2.8 +/-    1.16       7.6 +/-    1.16  0.120 / 0.110
G26     144.2          31.6                8.8 +/-    0.75      14.8 +/-    0.75  0.120 / 0.090
G31     43.2           66.6                7.1 +/-    0.34       7.7 +/-    0.34  0.030 / 0.030
G32     71.0           28.5                5.0 +/-    1.00       9.0 +/-    1.00  0.020 / 0.040