PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-01:13:10
G02     29.0           59.0               10.7 +/-    0.81      12.2 +/-    0.81  0.030 / 0.030
G05     144.5          58.0               13.5 +/-    0.70      15.6 +/-    0.70  0.030 / 0.040
G06     51.2           19.4                7.1 +/-    1.60      15.8 +/-    1.60  0.030 / 0.040
G12     207.4          73.2               11.4 +/-    0.66      11.8 +/-    0.66  0.040 / 0.040
G19     95.3           14.2               11.5 +/-    0.51      29.1 +/-    0.51  0.030 / 0.040
G25     304.5          49.0               10.8 +/-    1.72      13.8 +/-    1.72  0.030 / 0.040
G29     303.2          23.4                8.8 +/-    1.65      17.9 +/-    1.65  0.050 / 0.070