PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/20-00:12:30
G02     10.4           71.2               11.0 +/-    0.56      11.5 +/-    0.56  0.030 / 0.020
G05     158.1          43.7               14.6 +/-    1.06      20.0 +/-    1.06  0.020 / 0.020
G06     44.8           31.1                9.8 +/-    1.14      16.8 +/-    1.14  0.040 / 0.040
G12     279.1          79.3               13.7 +/-    0.39      13.9 +/-    0.39  0.040 / 0.040
G19     82.8           23.0               12.8 +/-    2.22      26.1 +/-    2.22  0.060 / 0.090
G24     221.3          16.1               17.4 +/-    2.67      42.0 +/-    2.67  0.060 / 0.080
G25     314.8          36.7               11.6 +/-    0.76      17.8 +/-    0.76  0.070 / 0.120
G29     292.7          13.7               11.6 +/-    2.03      29.8 +/-    2.03  0.100 / 0.110