PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/19-14:42:40
G02     35.5           53.3                8.2 +/-    0.30      10.0 +/-    0.30  0.050 / 0.060
G05     139.6          65.1               10.6 +/-    0.94      11.5 +/-    0.94  0.050 / 0.050
G06     56.7           11.6                6.8 +/-    2.59      18.4 +/-    2.59  0.050 / 0.040
G12     191.1          61.0               10.2 +/-    1.38      11.5 +/-    1.38  0.030 / 0.040
G25     283.1          58.8                9.2 +/-    1.22      10.6 +/-    1.22  0.050 / 0.040
G29     310.9          31.7                6.6 +/-    1.76      11.2 +/-    1.76  0.030 / 0.040