PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-00:58:10
G02     39.2           50.2                8.7 +/-    1.36      10.9 +/-    1.36  0.040 / 0.040
G05     122.4          66.7               10.4 +/-    0.44      11.2 +/-    0.44  0.040 / 0.040
G06     57.5           10.7                8.6 +/-    1.82      23.7 +/-    1.82  0.040 / 0.030
G12     192.2          60.5               11.5 +/-    0.54      13.0 +/-    0.54  0.030 / 0.040
G25     287.6          56.2                5.9 +/-    1.08       7.0 +/-    1.08  0.110 / 0.160
G29     311.1          31.7                9.7 +/-    1.19      16.4 +/-    1.19  0.150 / 0.230