PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-04:57:50
G01     320.2          13.6                1.7 +/-   13.85       4.5 +/-   13.85  0.030 / 0.030
G08     260.6          15.9                4.0 +/-   25.14       9.8 +/-   25.14  0.020 / 0.010
G10     69.2           57.0               17.1 +/-   32.25      20.0 +/-   32.25  0.030 / 0.100
G11     305.9          22.4                7.2 +/-   22.49      14.9 +/-   22.49  0.040 / 0.020
G14     284.4          70.1                5.7 +/-    8.78       6.0 +/-    8.78  0.130 / 0.530
G18     95.8           34.5                8.9 +/-   46.36      14.3 +/-   46.36  0.120 / 0.490
G21     154.9          10.4                3.7 +/-   24.95      10.4 +/-   24.95  0.150 / 0.250
G27     226.6          11.9                7.0 +/-   10.60      18.7 +/-   10.60  0.110 / 0.180
G31     177.2          35.9               15.7 +/-   31.98      24.6 +/-   31.98  0.040 / 0.050
G32     351.9          71.5               16.6 +/-   31.47      17.4 +/-   31.47  0.050 / 0.050