PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-00:28:00
G02     12.7           70.1               10.4 +/-    0.55      10.9 +/-    0.55  0.030 / 0.030
G05     157.2          45.0               14.9 +/-    0.52      20.1 +/-    0.52  0.020 / 0.030
G06     45.2           30.1                7.9 +/-    1.26      13.7 +/-    1.26  0.030 / 0.070
G12     272.3          79.7               10.4 +/-    0.81      10.6 +/-    0.81  0.030 / 0.060
G19     83.9           22.2               11.4 +/-    0.82      23.7 +/-    0.82  0.040 / 0.040
G24     220.5          15.3               16.9 +/-    3.83      41.7 +/-    3.83  0.050 / 0.050
G25     314.3          37.8               12.6 +/-    1.51      19.1 +/-    1.51  0.080 / 0.160
G29     293.6          14.5               10.7 +/-    2.76      27.1 +/-    2.76  0.090 / 0.160