PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-08:42:50
G02     349.7          77.3                8.8 +/-    0.43       9.0 +/-    0.43  0.190 / 0.170
G05     164.6          34.4                7.7 +/-    1.44      12.3 +/-    1.44  0.150 / 0.220
G06     41.2           40.9                5.5 +/-    1.03       7.8 +/-    1.03  0.030 / 0.020
G12     309.5          71.7                9.3 +/-    0.42       9.8 +/-    0.42  0.030 / 0.020
G19     75.3           27.7                6.1 +/-    1.41      11.2 +/-    1.41  0.080 / 0.090
G24     223.1          20.4                6.9 +/-    1.82      15.1 +/-    1.82  0.070 / 0.080
G25     315.9          35.8                7.0 +/-    1.32      11.0 +/-    1.32  0.070 / 0.090
G29     287.9          11.4               -1.9 +/-   15.66      -5.2 +/-   15.66  0.080 / 0.090