PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-23:28:10
G05     46.4           23.9                7.4 +/-    0.92      14.8 +/-    0.92  0.050 / 0.140
G13     86.8           35.9               10.6 +/-    0.72      16.5 +/-    0.72  0.060 / 0.130
G15     138.8          45.4               13.8 +/-    1.18      18.5 +/-    1.18  0.050 / 0.120
G20     238.2          15.0                9.0 +/-    1.61      22.4 +/-    1.61  0.050 / 0.100
G21     304.6          40.8               11.5 +/-    0.91      16.6 +/-    0.91  0.130 / 0.300
G25     203.5          17.6               12.1 +/-    1.98      28.3 +/-    1.98  0.170 / 0.270
G26     294.7          21.0               10.8 +/-    1.82      23.1 +/-    1.82  0.050 / 0.030
G29     142.2          83.4               10.8 +/-    0.96      10.8 +/-    0.96  0.030 / 0.020