PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-18:28:00
G02     278.9          80.0               11.1 +/-    0.84      11.3 +/-    0.84  0.030 / 0.080
G05     171.3          22.7               14.0 +/-    2.31      28.8 +/-    2.31  0.030 / 0.050
G06     40.4           47.9               10.9 +/-    0.71      14.2 +/-    0.71  0.090 / 0.180
G12     319.1          63.8                9.7 +/-    0.97      10.6 +/-    0.97  0.070 / 0.160
G17     81.3           13.6               11.0 +/-    1.78      28.3 +/-    1.78  0.060 / 0.150
G19     69.3           30.3               11.1 +/-    0.84      19.3 +/-    0.84  0.060 / 0.130
G24     236.7          28.7               11.7 +/-    1.27      21.2 +/-    1.27  0.080 / 0.150
G25     317.7          26.0                8.6 +/-    1.78      16.4 +/-    1.78  0.070 / 0.150