PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/26-20:28:00
G02     57.1           34.9                9.0 +/-    1.73      14.3 +/-    1.73  0.060 / 0.070
G05     60.7           62.7                8.9 +/-    0.73       9.9 +/-    0.73  0.060 / 0.090
G12     185.3          35.8               11.1 +/-    1.33      17.4 +/-    1.33  0.090 / 0.300
G13     128.2          13.7               10.7 +/-    2.17      27.5 +/-    2.17  0.140 / 0.430
G15     164.5          11.2                7.8 +/-   21.67      21.1 +/-   21.67  0.140 / 0.330
G21     269.9          15.4                8.3 +/-    2.65      20.4 +/-    2.65  0.190 / 0.340
G25     240.9          53.4                9.7 +/-    4.02      11.8 +/-    4.02  0.140 / 0.330
G29     328.0          53.3                9.6 +/-    1.02      11.7 +/-    1.02  0.250 / 0.480