PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-16:42:20
G02     17.1           65.8                7.5 +/-    0.59       8.2 +/-    0.59  0.050 / 0.050
G05     155.0          52.7               12.0 +/-    0.58      14.6 +/-    0.58  0.040 / 0.040
G06     49.6           21.5                6.5 +/-    0.51      13.8 +/-    0.51  0.050 / 0.080
G12     204.4          75.0                9.6 +/-    0.95       9.9 +/-    0.95  0.040 / 0.070
G19     91.0           18.9                8.4 +/-    0.93      19.0 +/-    0.93  0.030 / 0.040
G25     306.0          49.0                8.9 +/-    0.70      11.3 +/-    0.70  0.030 / 0.040
G29     300.7          21.0                8.7 +/-    1.38      18.8 +/-    1.38  0.080 / 0.140