PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/13-19:12:30
G02     33.6           55.0                7.3 +/-    0.62       8.7 +/-    0.62  0.030 / 0.040
G05     134.0          64.6               10.3 +/-    0.89      11.2 +/-    0.89  0.030 / 0.030
G06     56.2           11.6                7.1 +/-    0.86      19.1 +/-    0.86  0.030 / 0.040
G12     188.0          61.0                9.2 +/-    1.52      10.4 +/-    1.52  0.040 / 0.060
G19     101.4          10.6                8.8 +/-    1.73      24.1 +/-    1.73  0.040 / 0.060
G25     290.9          56.0                6.3 +/-    0.86       7.4 +/-    0.86  0.040 / 0.040
G29     308.8          29.1                6.8 +/-    1.21      12.2 +/-    1.21  0.080 / 0.460