PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/25-10:43:10
G01     127.9          10.8              -10.0 +/-   31.03     -27.5 +/-   31.03  0.030 / 0.030
G07     49.6           69.6                5.0 +/-    0.68       5.3 +/-    0.68  0.030 / 0.030
G08     50.1           38.4                3.7 +/-    1.12       5.5 +/-    1.12  0.030 / 0.030
G09     176.1          34.8                4.4 +/-    1.04       7.1 +/-    1.04  0.030 / 0.030
G11     117.8          34.8                7.0 +/-    1.20      11.1 +/-    1.20  0.160 / 0.370
G13     321.3          10.9               -5.5 +/-   10.30     -15.1 +/-   10.30  0.130 / 0.320
G17     199.1          15.3                3.3 +/-    5.41       8.1 +/-    5.41  0.290 / 0.290
G18     104.2          16.0                3.7 +/-    2.46       9.1 +/-    2.46  0.180 / 0.290
G28     273.9          52.1                6.2 +/-    2.91       7.6 +/-    2.91  0.130 / 0.260
G30     329.3          58.0                3.7 +/-    0.27       4.3 +/-    0.27  0.110 / 0.250