PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/23-00:12:30
G02     262.5          80.0                7.6 +/-    0.58       7.7 +/-    0.58  0.110 / 0.250
G05     169.1          20.8               10.9 +/-    1.22      23.5 +/-    1.22  0.110 / 0.230
G06     39.0           56.9                8.3 +/-    0.79       9.7 +/-    0.79  0.090 / 0.120
G12     320.6          53.7                8.7 +/-    2.28      10.5 +/-    2.28  0.080 / 0.140
G17     74.6           18.9                8.5 +/-    0.91      19.3 +/-    0.91  0.040 / 0.050
G19     61.5           35.4                9.1 +/-    0.75      14.3 +/-    0.75  0.040 / 0.050
G24     239.2          31.8               10.9 +/-    0.88      18.5 +/-    0.88  0.060 / 0.230
G25     317.0          16.8                8.4 +/-    2.54      19.9 +/-    2.54  0.080 / 0.160