PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-00:57:20
G02     32.4           56.1                9.3 +/-    0.92      10.9 +/-    0.92  0.140 / 0.210
G05     138.9          61.3               12.3 +/-    0.48      13.8 +/-    0.48  0.120 / 0.160
G06     53.2           16.4                9.1 +/-    2.02      21.8 +/-    2.02  0.030 / 0.030
G12     199.8          69.2               10.8 +/-    0.32      11.5 +/-    0.32  0.040 / 0.040
G19     98.3           12.0               12.0 +/-    2.26      32.0 +/-    2.26  0.350 / 0.220
G25     299.8          51.8               10.5 +/-    1.61      12.9 +/-    1.61  0.200 / 0.240
G29     305.8          26.0                9.0 +/-    1.03      17.3 +/-    1.03  0.020 / 0.030