PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/27-08:27:30
G01     128.2          10.7              -13.4 +/-   31.95     -36.9 +/-   31.95  0.030 / 0.050
G07     50.7           69.4                6.1 +/-    0.69       6.4 +/-    0.69  0.040 / 0.050
G08     50.4           38.8                3.4 +/-    0.59       5.0 +/-    0.59  0.200 / 0.360
G09     174.2          32.6                6.5 +/-    1.17      10.8 +/-    1.17  0.160 / 0.360
G11     118.3          34.8                7.7 +/-    1.05      12.3 +/-    1.05  0.030 / 0.040
G17     199.0          15.0                3.4 +/-    3.06       8.4 +/-    3.06  0.030 / 0.030
G18     103.6          15.9                5.8 +/-    1.03      14.2 +/-    1.03  0.110 / 0.240
G23     161.1          10.0                4.0 +/-    2.14      11.0 +/-    2.14  0.100 / 0.190
G28     272.8          51.3                5.5 +/-    1.21       6.8 +/-    1.21  0.210 / 0.330
G30     329.2          58.0                2.7 +/-    0.55       3.1 +/-    0.55  0.180 / 0.230