PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/31-04:58:10
G01     318.6          18.5                6.3 +/-    1.63      14.4 +/-    1.63  0.030 / 0.020
G08     255.3          12.9                0.8 +/-   22.55       2.0 +/-   22.55  0.020 / 0.020
G10     79.3           54.0               -3.0 +/-   13.07      -3.7 +/-   13.07  0.120 / 0.170
G11     300.8          25.3                5.0 +/-    1.45       9.7 +/-    1.45  0.120 / 0.200
G14     303.6          71.5                5.3 +/-    0.74       5.6 +/-    0.74  0.160 / 0.240
G18     101.3          30.4              -22.8 +/-   59.98     -39.6 +/-   59.98  0.210 / 0.320
G22     300.7          11.6                2.8 +/-    7.53       7.6 +/-    7.53  0.040 / 0.030
G31     176.0          42.4               18.4 +/-   17.37      25.8 +/-   17.37  0.040 / 0.030
G32     5.8            67.7                4.1 +/-    0.50       4.4 +/-    0.50  0.040 / 0.050