PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-11:27:50
G01     116.2          19.9                5.5 +/-    1.04      12.2 +/-    1.04  0.090 / 0.110
G07     88.7           64.6                5.1 +/-    0.80       5.6 +/-    0.80  0.090 / 0.120
G08     43.2           26.6                2.5 +/-    1.33       4.7 +/-    1.33  0.030 / 0.050
G09     174.7          20.5                5.2 +/-    2.99      11.4 +/-    2.99  0.040 / 0.040
G11     100.6          41.0                7.0 +/-    1.13      10.0 +/-    1.13  0.050 / 0.050
G13     315.9          22.2               -0.2 +/-    2.44      -0.4 +/-    2.44  0.050 / 0.060
G17     201.8          29.4                4.9 +/-    1.22       8.7 +/-    1.22  0.030 / 0.030
G18     90.1           21.9                4.1 +/-    1.02       8.5 +/-    1.02  0.030 / 0.030
G28     298.2          58.4                3.8 +/-    1.02       4.4 +/-    1.02  0.120 / 0.250
G30     348.4          70.1                4.4 +/-    1.12       4.7 +/-    1.12  0.120 / 0.240