PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-01:27:50
G02     34.8           54.0               11.2 +/-    0.56      13.5 +/-    0.56  0.030 / 0.040
G05     134.2          63.3               13.6 +/-    0.50      15.0 +/-    0.50  0.030 / 0.050
G06     54.5           14.7                8.7 +/-    2.72      21.8 +/-    2.72  0.040 / 0.040
G12     197.3          66.7               10.4 +/-    1.28      11.2 +/-    1.28  0.040 / 0.050
G19     100.3          10.4               11.8 +/-    2.49      32.7 +/-    2.49  0.050 / 0.050
G25     296.5          53.3               11.4 +/-    0.71      13.8 +/-    0.71  0.050 / 0.070
G29     307.6          27.9                7.8 +/-    1.33      14.3 +/-    1.33  0.070 / 0.060