PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/23-14:28:10
G02     64.6           27.9                8.2 +/-    1.29      15.0 +/-    1.29  0.030 / 0.030
G05     52.9           57.8                7.1 +/-    0.52       8.3 +/-    0.52  0.020 / 0.030
G12     185.1          28.3               10.8 +/-    1.06      19.7 +/-    1.06  0.150 / 0.200
G13     125.4          18.6               10.8 +/-    1.20      24.5 +/-    1.20  0.130 / 0.200
G15     159.9          16.6               11.3 +/-    3.05      26.9 +/-    3.05  0.030 / 0.040
G20     212.2          63.9               10.6 +/-    0.63      11.6 +/-    0.63  0.050 / 0.030
G21     277.0          24.1                7.5 +/-    0.80      15.0 +/-    0.80  0.080 / 0.130
G25     228.7          47.7                9.3 +/-    3.07      12.0 +/-    3.07  0.070 / 0.080
G29     337.6          64.6                7.4 +/-    0.66       8.1 +/-    0.66  0.080 / 0.070