PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/27-05:12:50
G01     318.9          17.6                1.6 +/-    6.43       3.7 +/-    6.43  0.020 / 0.010
G08     256.3          13.5               -3.3 +/-   22.58      -8.6 +/-   22.58  0.020 / 0.010
G10     77.6           54.6               -9.8 +/-   12.10     -11.8 +/-   12.10  0.180 / 0.210
G11     301.7          24.9                2.4 +/-    1.41       4.7 +/-    1.41  0.140 / 0.240
G14     300.0          71.4                3.0 +/-    0.92       3.1 +/-    0.92  0.110 / 0.230
G18     100.3          31.2              -38.5 +/-   59.01     -65.7 +/-   59.01  0.120 / 0.170
G22     300.2          11.1                0.8 +/-    6.26       2.1 +/-    6.26  0.030 / 0.010
G31     176.1          41.3               19.6 +/-   15.87      27.9 +/-   15.87  0.040 / 0.010
G32     3.9            68.3               -0.2 +/-    0.40      -0.2 +/-    0.40  0.040 / 0.040