PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-01:43:10
G02     55.5           35.8                8.3 +/-    0.35      13.0 +/-    0.35  0.070 / 0.110
G05     66.0           64.2               10.3 +/-    0.54      11.4 +/-    0.54  0.060 / 0.090
G12     185.4          38.0               13.1 +/-    1.05      19.7 +/-    1.05  0.040 / 0.050
G13     132.5          11.5               13.8 +/-   12.35      37.3 +/-   12.35  0.030 / 0.040
G21     266.7          13.4               14.0 +/-    2.94      36.1 +/-    2.94  0.190 / 0.350
G25     247.0          55.2               11.8 +/-    0.80      14.0 +/-    0.80  0.180 / 0.280
G29     324.2          48.6               10.6 +/-    1.45      13.6 +/-    1.45  0.050 / 0.080