PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/08-21:58:10
G02     257.9          79.0               11.0 +/-    0.38      11.1 +/-    0.38  0.170 / 0.150
G05     169.4          20.7               15.1 +/-    0.87      32.8 +/-    0.87  0.120 / 0.150
G06     40.2           52.7               10.9 +/-    0.56      13.3 +/-    0.56  0.030 / 0.030
G12     321.5          58.1                9.9 +/-    0.42      11.4 +/-    0.42  0.030 / 0.030
G17     73.8           21.3               10.7 +/-    1.15      22.9 +/-    1.15  0.170 / 0.370
G19     60.2           37.6               11.0 +/-    1.64      16.7 +/-    1.64  0.170 / 0.300
G24     240.0          32.0               11.5 +/-    1.18      19.3 +/-    1.18  0.090 / 0.130
G25     317.3          15.8                8.4 +/-    2.01      20.5 +/-    2.01  0.100 / 0.180