PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/11-21:27:40
G02     56.9           34.9                8.8 +/-    2.14      13.9 +/-    2.14  0.060 / 0.060
G05     61.3           62.8                8.4 +/-    0.63       9.4 +/-    0.63  0.060 / 0.090
G12     185.8          36.8                9.4 +/-    1.82      14.4 +/-    1.82  0.080 / 0.090
G13     128.7          13.3               11.1 +/-    1.90      28.6 +/-    1.90  0.060 / 0.080
G15     164.6          10.9                0.1 +/-   24.03       0.3 +/-   24.03  0.160 / 0.390
G21     269.5          15.2                7.3 +/-    2.71      18.1 +/-    2.71  0.100 / 0.340
G25     241.7          53.7                7.7 +/-    3.63       9.2 +/-    3.63  0.200 / 0.390
G29     327.9          53.1                9.5 +/-    0.82      11.6 +/-    0.82  0.160 / 0.330