PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/30-10:58:10
G03     192.4          21.3                5.1 +/-    3.02      10.9 +/-    3.02  0.030 / 0.020
G07     294.4          41.0               -1.1 +/-    9.50      -1.5 +/-    9.50  0.020 / 0.030
G08     137.9          30.3                4.9 +/-    2.46       8.5 +/-    2.46  0.140 / 0.260
G09     321.2          67.1                3.6 +/-    0.41       3.8 +/-    0.41  0.260 / 0.250
G16     42.3           38.5                9.8 +/-   15.33      14.6 +/-   15.33  0.070 / 0.110
G23     117.1          79.5               16.8 +/-   19.86      17.0 +/-   19.86  0.050 / 0.110
G26     43.6           11.6              -16.5 +/-   74.12     -44.6 +/-   74.12  0.020 / 0.030
G27     95.8           34.3               -2.2 +/-   12.33      -3.5 +/-   12.33  0.030 / 0.030
G30     273.9          11.8               -3.9 +/-   25.33     -10.4 +/-   25.33  0.050 / 0.070