PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/01-21:12:40
G02     2.5            73.7                9.0 +/-    0.61       9.3 +/-    0.61  0.030 / 0.020
G05     160.2          41.3               11.4 +/-    0.73      16.2 +/-    0.73  0.020 / 0.030
G06     44.3           32.0                6.5 +/-    1.66      10.9 +/-    1.66  0.040 / 0.060
G12     282.3          80.0                9.1 +/-    0.51       9.3 +/-    0.51  0.060 / 0.070
G19     80.6           24.9                9.9 +/-    0.95      19.3 +/-    0.95  0.120 / 0.210
G24     221.9          17.2               11.1 +/-    2.41      26.3 +/-    2.41  0.170 / 0.160
G25     315.3          35.7                9.2 +/-    0.80      14.4 +/-    0.80  0.220 / 0.320
G29     291.2          12.2               10.3 +/-    3.58      27.2 +/-    3.58  0.140 / 0.370