PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-15:27:50
G02     351.2          75.5                5.3 +/-    3.15       5.5 +/-    3.15  0.040 / 0.080
G05     164.2          38.5                8.4 +/-   25.13      12.5 +/-   25.13  0.040 / 0.080
G06     43.9           32.9                5.6 +/-   35.28       9.2 +/-   35.28  0.130 / 0.330
G12     283.8          80.1                5.4 +/-    1.96       5.5 +/-    1.96  0.110 / 0.230
G19     79.1           26.8                6.4 +/-    5.15      11.9 +/-    5.15  0.020 / 0.030
G24     220.7          17.0                2.7 +/-   23.64       6.4 +/-   23.64  0.030 / 0.040
G25     314.8          37.7                7.1 +/-   34.36      10.7 +/-   34.36  0.050 / 0.100
G29     291.0          12.4                8.8 +/-   11.13      23.2 +/-   11.13  0.050 / 0.090