PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-01:43:00
G02     55.2           36.1                8.8 +/-    1.98      13.7 +/-    1.98  0.040 / 0.060
G05     66.9           64.5               10.0 +/-    0.58      10.9 +/-    0.58  0.040 / 0.060
G12     185.5          38.5               13.0 +/-    1.09      19.4 +/-    1.09  0.250 / 0.310
G13     132.9          11.2               13.1 +/-    2.78      35.8 +/-    2.78  0.180 / 0.240
G21     266.4          13.2               11.2 +/-    9.30      29.0 +/-    9.30  0.030 / 0.040
G25     247.8          55.5               11.3 +/-    1.12      13.4 +/-    1.12  0.040 / 0.030
G29     323.9          48.2               10.1 +/-    0.46      13.0 +/-    0.46  0.200 / 0.470