PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/23-06:12:40
G01     307.9          32.5                4.2 +/-    2.28       7.0 +/-    2.28  0.030 / 0.020
G10     104.1          42.2                5.1 +/-    0.79       7.1 +/-    0.79  0.040 / 0.050
G11     280.7          29.9                6.5 +/-    1.32      11.4 +/-    1.32  0.070 / 0.100
G14     358.2          66.9                4.1 +/-    0.78       4.4 +/-    0.78  0.070 / 0.080
G18     115.7          17.2                4.4 +/-    1.41      10.3 +/-    1.41  0.040 / 0.040
G22     309.2          25.9                4.8 +/-    1.26       9.1 +/-    1.26  0.040 / 0.040
G25     79.1           15.5                5.5 +/-    2.40      13.6 +/-    2.40  0.080 / 0.160
G31     167.6          63.6                7.5 +/-    0.51       8.3 +/-    0.51  0.130 / 0.140
G32     33.7           54.0                5.1 +/-    1.31       6.1 +/-    1.31  0.190 / 0.210