PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-08:57:40
G01     123.4          14.6                5.0 +/-    2.07      12.4 +/-    2.07  0.030 / 0.040
G07     68.6           68.1                5.3 +/-    0.36       5.7 +/-    0.36  0.030 / 0.040
G08     46.6           33.9                3.5 +/-    0.41       5.6 +/-    0.41  0.020 / 0.040
G09     174.0          26.5                7.6 +/-    1.31      14.4 +/-    1.31  0.030 / 0.050
G11     111.4          37.9                5.8 +/-    0.94       8.8 +/-    0.94  0.170 / 0.290
G13     319.6          15.7                0.1 +/-    2.61       0.2 +/-    2.61  0.130 / 0.230
G17     199.9          21.0                6.6 +/-    1.35      14.1 +/-    1.35  0.100 / 0.440
G18     97.8           18.7                4.0 +/-    1.12       9.1 +/-    1.12  0.100 / 0.370
G28     282.4          54.5                4.9 +/-    0.66       5.8 +/-    0.66  0.100 / 0.230
G30     336.1          63.2                3.7 +/-    0.60       4.1 +/-    0.60  0.100 / 0.200