PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-19:43:00
G02     235.1          73.0                9.4 +/-    0.72       9.8 +/-    0.72  0.140 / 0.130
G05     172.3          14.0               11.7 +/-    2.14      29.7 +/-    2.14  0.110 / 0.150
G06     41.3           61.7                9.4 +/-    0.50      10.5 +/-    0.50  0.030 / 0.050
G12     320.7          47.0                6.8 +/-    1.14       8.9 +/-    1.14  0.040 / 0.040
G17     67.4           25.3                9.5 +/-    1.39      18.5 +/-    1.39  0.040 / 0.060
G19     54.7           39.3                8.9 +/-    0.82      13.1 +/-    0.82  0.030 / 0.060
G24     248.2          36.1               10.9 +/-    1.24      16.9 +/-    1.24  0.060 / 0.150