PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-01:13:00
G01     319.9          14.9                5.6 +/-    1.90      14.0 +/-    1.90  0.160 / 0.410
G08     259.2          15.0               11.1 +/-    2.29      27.6 +/-    2.29  0.150 / 0.390
G10     72.6           56.0                7.1 +/-    0.85       8.4 +/-    0.85  0.020 / 0.030
G11     305.2          22.5                6.9 +/-    1.56      14.2 +/-    1.56  0.020 / 0.020
G14     289.3          70.5                8.5 +/-    0.65       8.9 +/-    0.65  0.060 / 0.060
G18     98.3           31.9                7.8 +/-    1.01      13.2 +/-    1.01  0.050 / 0.050
G27     225.3          10.7               15.0 +/-    3.53      41.1 +/-    3.53  0.110 / 0.080
G31     178.8          35.8               12.3 +/-    2.38      19.3 +/-    2.38  0.050 / 0.080
G32     350.0          71.3                7.2 +/-    0.90       7.6 +/-    0.90  0.220 / 0.310