PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-21:12:40
G02     22.5           63.5                8.3 +/-    0.68       9.2 +/-    0.68  0.040 / 0.020
G05     150.6          54.2               10.9 +/-    0.59      13.0 +/-    0.59  0.040 / 0.030
G06     49.7           21.3                7.0 +/-    2.06      15.0 +/-    2.06  0.050 / 0.040
G12     207.2          75.5                8.8 +/-    0.33       9.1 +/-    0.33  0.040 / 0.040
G19     91.8           17.4                8.7 +/-    1.57      20.4 +/-    1.57  0.170 / 0.160
G25     307.4          47.1                9.6 +/-    1.25      12.6 +/-    1.25  0.160 / 0.250
G29     300.5          20.5                8.2 +/-    1.23      17.8 +/-    1.23  0.050 / 0.060