PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/07-21:43:10
G02     56.9           34.8                9.6 +/-    2.69      15.3 +/-    2.69  0.050 / 0.060
G05     61.5           62.8               10.0 +/-    1.27      11.1 +/-    1.27  0.050 / 0.060
G12     185.9          37.0               12.2 +/-    1.36      18.6 +/-    1.36  0.060 / 0.110
G13     128.9          13.2               16.1 +/-    3.57      41.8 +/-    3.57  0.060 / 0.090
G15     164.6          10.8                0.3 +/-   33.46       0.7 +/-   33.46  0.140 / 0.410
G21     269.4          15.1               10.8 +/-    2.23      26.9 +/-    2.23  0.150 / 0.330
G25     241.9          53.8               11.0 +/-    3.07      13.3 +/-    3.07  0.040 / 0.070
G29     327.9          53.1               12.2 +/-    0.61      14.8 +/-    0.61  0.070 / 0.090