PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/15-04:12:30
G01     228.1          18.9                6.5 +/-    3.93      14.6 +/-    3.93  0.210 / 0.400
G03     294.8          65.0                6.1 +/-    0.73       6.7 +/-    0.73  0.220 / 0.290
G14     84.0           26.4                4.0 +/-    1.50       7.6 +/-    1.50  0.090 / 0.140
G16     146.6          43.3                6.8 +/-    0.99       9.3 +/-    0.99  0.090 / 0.140
G22     225.9          72.5                7.4 +/-    0.64       7.7 +/-    0.64  0.040 / 0.030
G23     305.0          34.9                5.0 +/-    2.01       7.9 +/-    2.01  0.040 / 0.030
G26     100.4          53.5                5.8 +/-    0.93       7.1 +/-    0.93  0.050 / 0.040
G31     44.6           33.7                4.4 +/-    1.20       7.1 +/-    1.20  0.050 / 0.050