PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/16-06:28:00
G02     58.4           32.8                1.7 +/-    1.19       2.9 +/-    1.19  0.060 / 0.090
G05     61.3           62.0                2.7 +/-    0.46       3.0 +/-    0.46  0.070 / 0.070
G12     186.5          36.7                4.6 +/-    1.00       7.0 +/-    1.00  0.160 / 0.300
G13     131.1          13.1                6.7 +/-    2.28      17.4 +/-    2.28  0.120 / 0.300
G15     164.4          10.4               -5.3 +/-   14.75     -14.6 +/-   14.75  0.030 / 0.030
G20     210.8          45.9                6.2 +/-    1.07       8.3 +/-    1.07  0.030 / 0.040
G21     269.2          16.4                4.2 +/-    4.40      10.2 +/-    4.40  0.050 / 0.040
G25     243.2          53.9                4.5 +/-    2.97       5.4 +/-    2.97  0.060 / 0.060
G29     326.8          52.3                3.6 +/-    1.93       4.4 +/-    1.93  0.050 / 0.080