PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-07:58:00
G01     261.1          39.1                6.2 +/-    1.09       9.2 +/-    1.09  0.040 / 0.050
G03     316.5          35.9                3.6 +/-    1.21       5.6 +/-    1.21  0.040 / 0.040
G10     133.7          10.9                4.1 +/-    2.11      11.2 +/-    2.11  0.060 / 0.100
G11     244.0          16.5                5.5 +/-    2.02      13.3 +/-    2.02  0.050 / 0.090
G14     48.8           48.0                3.0 +/-    0.32       3.9 +/-    0.32  0.110 / 0.250
G18     227.5          33.8                8.0 +/-    1.32      13.0 +/-    1.32  0.210 / 0.230
G22     311.3          60.3                4.7 +/-    0.78       5.3 +/-    0.78  0.060 / 0.080
G25     46.0           14.0                0.0 +/-    1.16       0.0 +/-    1.16  0.070 / 0.090
G31     44.8           64.2                3.9 +/-    0.69       4.3 +/-    0.69  0.110 / 0.390
G32     71.4           26.3                3.6 +/-    0.80       6.9 +/-    0.80  0.120 / 0.370