PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-01:12:30
G02     32.0           56.5                9.8 +/-    0.95      11.6 +/-    0.95  0.030 / 0.030
G05     139.8          60.8               13.2 +/-    0.59      14.9 +/-    0.59  0.030 / 0.030
G06     52.8           16.9                9.2 +/-    2.24      21.9 +/-    2.24  0.030 / 0.030
G12     201.1          69.9               11.5 +/-    0.35      12.2 +/-    0.35  0.020 / 0.030
G19     97.9           12.3               11.9 +/-    2.08      31.5 +/-    2.08  0.060 / 0.070
G25     300.7          51.4               10.2 +/-    1.61      12.7 +/-    1.61  0.040 / 0.050
G29     305.4          25.6                8.9 +/-    0.76      17.2 +/-    0.76  0.200 / 0.340