PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/15-14:57:50
G02     58.4           33.2                4.6 +/-    2.29       7.6 +/-    2.29  0.030 / 0.030
G05     63.1           65.4                7.8 +/-    0.63       8.4 +/-    0.63  0.030 / 0.030
G12     182.7          32.7                8.3 +/-    1.10      13.7 +/-    1.10  0.140 / 0.480
G13     127.5          14.1                9.4 +/-    1.92      23.8 +/-    1.92  0.150 / 0.390
G15     163.5          12.2                7.9 +/-    6.85      21.0 +/-    6.85  0.050 / 0.110
G21     270.6          16.0                6.5 +/-    1.90      15.8 +/-    1.90  0.090 / 0.100
G25     239.5          53.0               11.6 +/-    4.48      14.2 +/-    4.48  0.110 / 0.070
G29     327.3          52.5                7.9 +/-    0.56       9.7 +/-    0.56  0.100 / 0.080