PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-19:12:40
G02     11.4           69.9               11.8 +/-    0.40      12.5 +/-    0.40  0.030 / 0.030
G05     162.1          44.7               17.2 +/-    1.33      23.3 +/-    1.33  0.040 / 0.030
G06     46.7           27.9                8.6 +/-    1.79      15.7 +/-    1.79  0.030 / 0.030
G12     248.2          79.7               11.1 +/-    0.48      11.3 +/-    0.48  0.030 / 0.030
G19     88.8           17.1                9.9 +/-    1.64      23.3 +/-    1.64  0.050 / 0.060
G20     197.2          12.8               26.3 +/-    4.61      68.8 +/-    4.61  0.050 / 0.060
G24     219.7          13.5               20.2 +/-    4.72      52.1 +/-    4.72  0.140 / 0.310
G25     310.3          46.1               11.7 +/-    1.10      15.5 +/-    1.10  0.100 / 0.480
G29     297.6          19.5               11.2 +/-    0.66      24.9 +/-    0.66  0.050 / 0.050