PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-15:27:40
G02     73.7           20.6                9.3 +/-    1.91      20.1 +/-    1.91  0.040 / 0.050
G05     46.0           47.0                7.6 +/-    0.52      10.0 +/-    0.52  0.030 / 0.050
G12     182.5          16.7               11.8 +/-    1.64      28.2 +/-    1.64  0.040 / 0.030
G13     115.2          26.3               12.6 +/-    1.79      23.9 +/-    1.79  0.030 / 0.020
G15     153.3          26.4               15.8 +/-    4.03      29.8 +/-    4.03  0.110 / 0.280
G18     223.9          16.8               11.1 +/-    3.04      26.4 +/-    3.04  0.160 / 0.300
G20     226.6          76.9               10.8 +/-    0.60      11.1 +/-    0.60  0.090 / 0.120
G25     217.2          37.5               12.2 +/-    1.55      18.5 +/-    1.55  0.080 / 0.130
G29     354.0          76.7                8.6 +/-    0.28       8.8 +/-    0.28  0.080 / 0.200