PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/31-15:43:10
G10     236.1          14.5                8.8 +/-    3.20      22.1 +/-    3.20  0.080 / 0.070
G13     74.2           35.1                8.8 +/-    1.02      13.9 +/-    1.02  0.060 / 0.070
G15     120.5          52.9                9.5 +/-    0.56      11.6 +/-    0.56  0.070 / 0.100
G20     249.5          39.4               10.6 +/-    1.42      15.6 +/-    1.42  0.080 / 0.110
G21     313.9          46.9                8.5 +/-    0.65      11.2 +/-    0.65  0.030 / 0.020
G25     199.5          11.5               10.6 +/-    3.28      28.6 +/-    3.28  0.030 / 0.030
G26     287.3          20.0                3.5 +/-    1.51       7.8 +/-    1.51  0.310 / 0.480
G29     153.5          73.4               11.0 +/-    0.58      11.4 +/-    0.58  0.170 / 0.530