PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-16:57:40
G01     41.4           16.7                8.7 +/-    0.78      20.8 +/-    0.78  0.070 / 0.140
G06     173.4          40.1               14.1 +/-    1.16      20.4 +/-    1.16  0.070 / 0.110
G13     237.9          22.3               11.4 +/-    3.18      23.7 +/-    3.18  0.130 / 0.240
G15     273.6          12.1               11.6 +/-    1.14      31.0 +/-    1.14  0.160 / 0.230
G17     359.7          71.0               10.6 +/-    0.72      11.2 +/-    0.72  0.050 / 0.080
G19     270.8          66.5                9.4 +/-    0.89      10.1 +/-    0.89  0.040 / 0.080
G24     316.3          19.9               10.8 +/-    2.05      23.7 +/-    2.05  0.150 / 0.350
G28     71.0           47.1                9.5 +/-    0.31      12.5 +/-    0.31  0.140 / 0.350
G30     154.7          28.7               12.4 +/-    0.81      22.3 +/-    0.81  0.080 / 0.330