PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-18:27:40
G02     259.7          78.1               11.9 +/-    0.38      12.1 +/-    0.38  0.030 / 0.030
G05     172.5          19.4               15.4 +/-    2.26      34.4 +/-    2.26  0.020 / 0.030
G06     40.2           51.4               10.6 +/-    0.62      13.1 +/-    0.62  0.040 / 0.030
G12     320.8          60.0               10.5 +/-    0.75      11.9 +/-    0.75  0.040 / 0.040
G17     78.3           15.8                9.0 +/-    1.66      22.1 +/-    1.66  0.110 / 0.170
G19     65.8           32.5                8.6 +/-    1.75      14.3 +/-    1.75  0.180 / 0.170
G24     240.1          31.1               11.9 +/-    1.51      20.3 +/-    1.51  0.100 / 0.090
G25     317.7          22.8               11.3 +/-    1.72      23.3 +/-    1.72  0.100 / 0.100