PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-18:57:20
G02     18.2           65.9                8.9 +/-    0.62       9.6 +/-    0.62  0.030 / 0.040
G05     153.4          51.9               12.1 +/-    0.36      15.0 +/-    0.36  0.030 / 0.050
G06     49.0           22.3                7.1 +/-    1.50      14.8 +/-    1.50  0.070 / 0.070
G12     206.3          76.5               10.4 +/-    0.60      10.7 +/-    0.60  0.070 / 0.060
G19     89.9           19.0                8.7 +/-    3.13      19.5 +/-    3.13  0.030 / 0.030
G25     308.7          46.1                9.2 +/-    1.79      12.1 +/-    1.79  0.040 / 0.020
G29     299.0          19.2                9.4 +/-    1.26      21.1 +/-    1.26  0.140 / 0.130