PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/08-16:12:40
G01     41.2           16.7                7.8 +/-    2.85      18.7 +/-    2.85  0.040 / 0.080
G06     174.6          37.3                9.8 +/-    1.52      14.9 +/-    1.52  0.040 / 0.070
G13     237.7          23.5               11.1 +/-    1.56      22.4 +/-    1.56  0.380 / 0.240
G15     271.8          12.7                8.9 +/-    2.22      23.4 +/-    2.22  0.150 / 0.200
G17     350.7          73.1                9.2 +/-    0.61       9.5 +/-    0.61  0.030 / 0.030
G19     274.5          69.5                9.5 +/-    0.46      10.1 +/-    0.46  0.030 / 0.030
G24     316.9          17.6                9.3 +/-    2.22      21.6 +/-    2.22  0.070 / 0.080
G28     63.2           51.8               10.3 +/-    1.07      12.7 +/-    1.07  0.060 / 0.080
G30     153.7          27.5                8.6 +/-    1.40      15.9 +/-    1.40  0.040 / 0.040