PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-17:12:40
G01     40.8           15.8                9.6 +/-    1.70      23.4 +/-    1.70  0.060 / 0.130
G06     173.1          41.4               14.0 +/-    1.06      19.9 +/-    1.06  0.050 / 0.110
G13     236.8          21.5               14.9 +/-    2.46      31.6 +/-    2.46  0.140 / 0.340
G15     272.4          11.7               13.3 +/-    2.08      35.8 +/-    2.08  0.130 / 0.300
G17     1.9            70.1               11.9 +/-    0.57      12.6 +/-    0.57  0.130 / 0.260
G19     274.2          67.2               11.7 +/-    0.66      12.5 +/-    0.66  0.110 / 0.240
G24     315.9          20.9               11.8 +/-    3.00      25.3 +/-    3.00  0.060 / 0.090
G28     72.6           46.5               10.9 +/-    0.95      14.4 +/-    0.95  0.060 / 0.090
G30     155.1          27.4               12.9 +/-    1.45      23.9 +/-    1.45  0.070 / 0.220