PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-16:28:10
G02     58.0           34.0                7.7 +/-    1.01      12.4 +/-    1.01  0.030 / 0.040
G05     61.1           64.0                8.0 +/-    0.72       8.8 +/-    0.72  0.030 / 0.040
G12     183.4          33.0               10.3 +/-    1.16      16.9 +/-    1.16  0.150 / 0.320
G13     127.2          14.4               10.1 +/-    3.13      25.5 +/-    3.13  0.160 / 0.480
G15     164.2          11.9               11.8 +/-    4.13      31.6 +/-    4.13  0.130 / 0.510
G21     270.8          16.0                9.5 +/-    1.71      22.9 +/-    1.71  0.150 / 0.450
G25     239.2          52.7                8.5 +/-    1.39      10.4 +/-    1.39  0.060 / 0.090
G29     327.7          53.1                6.2 +/-    1.13       7.5 +/-    1.13  0.060 / 0.090