PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/02-12:27:50
G02     205.0          33.5                5.4 +/-    0.62       8.8 +/-    0.62  0.070 / 0.110
G06     153.5          71.7                3.4 +/-    1.75       3.6 +/-    1.75  0.070 / 0.140
G12     309.3          19.1                3.8 +/-    1.73       8.4 +/-    1.73  0.030 / 0.040
G17     39.5           46.1                2.0 +/-    0.80       2.7 +/-    0.80  0.040 / 0.030
G19     355.0          65.8                1.2 +/-    0.86       1.3 +/-    0.86  0.100 / 0.190
G24     292.7          41.0                3.9 +/-    1.46       5.6 +/-    1.46  0.110 / 0.180
G28     103.9          30.8                5.9 +/-    1.23      10.2 +/-    1.23  0.030 / 0.030