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                8.4 +/-    0.51       8.6 +/-    0.51  0.100 / 0.110
G05     169.1          20.8               11.3 +/-    1.95      24.4 +/-    1.95  0.060 / 0.100
G06     39.0           56.9                9.7 +/-    0.63      11.3 +/-    0.63  0.180 / 0.300
G12     320.6          53.7                8.6 +/-    1.07      10.4 +/-    1.07  0.170 / 0.330
G17     74.6           18.9                8.4 +/-    1.32      19.1 +/-    1.32  0.070 / 0.040
G19     61.5           35.4                9.3 +/-    1.61      14.6 +/-    1.61  0.050 / 0.050
G24     239.2          31.8                9.3 +/-    0.92      15.7 +/-    0.92  0.100 / 0.180
G25     317.0          16.8                7.4 +/-    1.99      17.7 +/-    1.99  0.090 / 0.230