PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-01:42:50
G10     259.2          32.3               13.5 +/-    2.20      22.5 +/-    2.20  0.180 / 0.350
G13     46.7           25.1                8.7 +/-    2.82      17.0 +/-    2.82  0.140 / 0.470
G15     72.5           55.9                9.7 +/-    2.33      11.4 +/-    2.33  0.100 / 0.070
G16     287.5          13.5               10.0 +/-    1.95      25.7 +/-    1.95  0.110 / 0.070
G18     283.1          60.0               -0.3 +/-   37.72      -0.4 +/-   37.72  0.030 / 0.030
G20     50.2           39.1                8.9 +/-    2.66      13.1 +/-    2.66  0.040 / 0.030
G21     346.7          66.9               10.8 +/-    0.55      11.6 +/-    0.55  0.240 / 0.380
G26     260.4          11.4                9.5 +/-   27.16      25.6 +/-   27.16  0.190 / 0.330
G27     320.7          14.4                6.5 +/-    7.35      16.5 +/-    7.35  0.040 / 0.060
G29     166.5          37.4               13.8 +/-    5.73      20.9 +/-    5.73  0.040 / 0.050