PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/23-08:12:40
G01     87.8           32.3                3.7 +/-    1.70       6.2 +/-    1.70  0.070 / 0.110
G07     127.5          42.4                8.1 +/-    1.11      11.4 +/-    1.11  0.070 / 0.110
G11     64.7           38.0                5.0 +/-    1.40       7.5 +/-    1.40  0.030 / 0.030
G13     291.8          37.0                9.0 +/-    2.15      13.7 +/-    2.15  0.020 / 0.020
G17     215.4          58.1                8.3 +/-    0.75       9.6 +/-    0.75  0.060 / 0.060
G18     59.7           22.4                4.4 +/-    1.65       9.1 +/-    1.65  0.060 / 0.060
G19     215.7          25.6                6.6 +/-    1.90      12.8 +/-    1.90  0.130 / 0.100
G28     350.2          61.7                4.4 +/-    0.43       4.9 +/-    0.43  0.090 / 0.130
G30     108.1          76.4                5.6 +/-    0.43       5.7 +/-    0.43  0.080 / 0.210