PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-16:57:40
G02     18.5           64.9                7.3 +/-    0.51       7.9 +/-    0.51  0.030 / 0.050
G05     153.6          54.0               10.7 +/-    0.72      12.9 +/-    0.72  0.040 / 0.050
G06     50.2           20.5                6.7 +/-    0.68      14.5 +/-    0.68  0.030 / 0.030
G12     201.2          73.7               10.5 +/-    0.83      10.9 +/-    0.83  0.030 / 0.030
G19     92.1           18.1                9.5 +/-    1.94      21.9 +/-    1.94  0.050 / 0.070
G25     304.8          49.8                8.7 +/-    0.95      11.0 +/-    0.95  0.040 / 0.070
G29     301.6          21.8                7.8 +/-    2.20      16.4 +/-    2.20  0.080 / 0.160