PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/20-00:42:30
G02     27.7           60.1                9.8 +/-    0.59      11.2 +/-    0.59  0.030 / 0.030
G05     146.1          57.0               13.2 +/-    0.62      15.4 +/-    0.62  0.040 / 0.030
G06     50.7           20.1                7.5 +/-    0.89      16.5 +/-    0.89  0.040 / 0.040
G12     209.0          74.1               10.5 +/-    1.65      10.9 +/-    1.65  0.030 / 0.040
G19     94.4           15.0               11.6 +/-    0.98      28.8 +/-    0.98  0.030 / 0.050
G25     305.5          48.3               11.6 +/-    1.10      14.9 +/-    1.10  0.030 / 0.050
G29     302.4          22.6                9.4 +/-    1.41      19.4 +/-    1.41  0.050 / 0.080