PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/27-06:27:40
G01     127.1          11.4               -4.2 +/-   31.09     -11.5 +/-   31.09  0.040 / 0.040
G07     56.0           69.0                4.2 +/-    0.88       4.5 +/-    0.88  0.040 / 0.030
G08     49.3           37.4                1.5 +/-    0.50       2.2 +/-    0.50  0.030 / 0.030
G09     174.7          32.1                6.3 +/-    1.23      10.6 +/-    1.23  0.030 / 0.030
G11     116.6          35.6                5.9 +/-    0.68       9.2 +/-    0.68  0.110 / 0.340
G13     321.0          11.9               -8.4 +/-   10.06     -22.4 +/-   10.06  0.100 / 0.440
G17     198.9          16.8                3.6 +/-    0.85       8.7 +/-    0.85  0.100 / 0.270
G18     101.7          16.5                5.1 +/-    1.16      12.1 +/-    1.16  0.110 / 0.340
G28     274.3          51.8                4.6 +/-    0.89       5.7 +/-    0.89  0.120 / 0.470
G30     330.4          59.1                2.8 +/-    1.01       3.2 +/-    1.01  0.110 / 0.370