PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/23-05:58:10
G02     58.2           33.0                2.7 +/-    1.23       4.5 +/-    1.23  0.080 / 0.100
G05     61.5           62.1                5.2 +/-    0.44       5.8 +/-    0.44  0.070 / 0.080
G12     186.4          36.8                6.0 +/-    1.31       9.2 +/-    1.31  0.030 / 0.030
G13     131.2          13.0                6.1 +/-    2.19      15.8 +/-    2.19  0.030 / 0.030
G15     164.5          10.2               -8.1 +/-    8.94     -22.3 +/-    8.94  0.080 / 0.080
G20     211.9          41.8                7.7 +/-    1.70      11.0 +/-    1.70  0.060 / 0.080
G21     269.0          16.1                4.5 +/-    3.04      10.9 +/-    3.04  0.100 / 0.380
G25     243.5          53.9                5.5 +/-    1.95       6.7 +/-    1.95  0.320 / 0.530
G29     326.6          52.0                5.0 +/-    1.24       6.2 +/-    1.24  0.050 / 0.080