PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/19-09:28:00
G02     37.5           50.8                5.3 +/-    0.65       6.6 +/-    0.65  0.030 / 0.030
G05     138.3          63.6                9.9 +/-    0.84      10.9 +/-    0.84  0.030 / 0.030
G06     54.4           13.9                3.3 +/-    1.76       8.4 +/-    1.76  0.030 / 0.030
G12     192.3          64.8                8.7 +/-    0.45       9.5 +/-    0.45  0.030 / 0.040
G25     292.9          55.1                6.7 +/-    2.33       7.9 +/-    2.33  0.140 / 0.100
G29     308.1          28.7                3.8 +/-    0.92       6.8 +/-    0.92  0.070 / 0.110