PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/31-05:27:50
G02     58.8           32.6                3.5 +/-    1.18       5.9 +/-    1.18  0.080 / 0.080
G05     60.3           61.5                4.8 +/-    0.52       5.4 +/-    0.52  0.070 / 0.080
G12     186.1          35.8                7.1 +/-    1.02      11.1 +/-    1.02  0.030 / 0.030
G13     130.5          13.5                6.4 +/-    2.71      16.6 +/-    2.71  0.040 / 0.040
G15     164.2          10.8               -3.2 +/-   16.82      -8.7 +/-   16.82  0.180 / 0.120
G20     213.3          38.1                6.7 +/-    1.70      10.0 +/-    1.70  0.110 / 0.120
G21     269.6          16.4                5.4 +/-    2.28      13.1 +/-    2.28  0.060 / 0.050
G25     242.2          53.5                6.6 +/-    2.99       8.0 +/-    2.99  0.050 / 0.080
G29     326.9          52.5                3.2 +/-    1.45       3.9 +/-    1.45  0.040 / 0.040