PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-20:27:30
G02     5.2            72.5               12.5 +/-    0.83      13.0 +/-    0.83  0.050 / 0.060
G05     159.4          43.0               14.3 +/-    0.51      19.8 +/-    0.51  0.050 / 0.060
G06     45.0           30.3                8.5 +/-    0.66      14.9 +/-    0.66  0.040 / 0.070
G12     267.4          81.1               12.7 +/-    1.14      12.8 +/-    1.14  0.030 / 0.090
G19     82.1           24.0               12.6 +/-    0.97      25.2 +/-    0.97  0.050 / 0.040
G24     220.5          15.9               13.5 +/-    3.82      32.8 +/-    3.82  0.040 / 0.040
G25     314.6          37.6               11.2 +/-    1.65      17.0 +/-    1.65  0.080 / 0.230
G29     292.5          13.3               14.3 +/-    2.22      36.9 +/-    2.22  0.100 / 0.220