PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-19:13:10
G02     56.5           35.7               -9.8 +/-    1.67     -15.4 +/-    1.67  0.120 / 0.360
G05     61.6           63.4                9.9 +/-    0.61      11.0 +/-    0.61  0.110 / 0.320
G12     184.9          35.5               11.6 +/-    0.93      18.2 +/-    0.93  0.190 / 0.430
G13     128.3          13.6               12.7 +/-    2.13      32.7 +/-    2.13  0.190 / 0.390
G15     165.0          10.9                0.1 +/-   29.95       0.2 +/-   29.95  0.150 / 0.310
G21     269.7          15.2                9.3 +/-    2.94      23.1 +/-    2.94  0.140 / 0.320
G25     241.3          53.5                9.6 +/-    3.76      11.6 +/-    3.76  0.050 / 0.080
G29     327.5          52.7               10.1 +/-    0.91      12.4 +/-    0.91  0.060 / 0.080