PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/13-23:57:50
G01     317.8          20.4               12.3 +/-    1.73      26.9 +/-    1.73  0.140 / 0.260
G08     253.6          11.6               13.7 +/-    1.64      36.9 +/-    1.64  0.150 / 0.310
G10     83.5           52.4               14.3 +/-    0.67      17.6 +/-    0.67  0.170 / 0.480
G11     299.6          25.3               12.8 +/-    1.37      24.9 +/-    1.37  0.210 / 0.390
G14     310.6          71.5               13.0 +/-    0.85      13.7 +/-    0.85  0.020 / 0.030
G18     104.4          26.7               17.0 +/-    1.64      32.0 +/-    1.64  0.030 / 0.080
G22     301.7          11.8               10.9 +/-    4.97      29.1 +/-    4.97  0.050 / 0.060
G31     178.7          42.2               19.1 +/-    1.80      26.8 +/-    1.80  0.060 / 0.060
G32     5.7            67.2               13.8 +/-    0.47      14.9 +/-    0.47  0.050 / 0.060