PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/07-12:28:10
G02     247.9          78.1                5.6 +/-    0.67       5.7 +/-    0.67  0.170 / 0.330
G05     172.5          16.5                5.8 +/-    1.55      13.9 +/-    1.55  0.190 / 0.350
G06     39.7           60.1                4.5 +/-    0.46       5.1 +/-    0.46  0.090 / 0.110
G12     321.3          52.5                4.6 +/-    0.44       5.6 +/-    0.44  0.120 / 0.090
G17     73.7           19.6                3.4 +/-    1.68       7.5 +/-    1.68  0.110 / 0.110
G19     60.5           36.1                3.7 +/-    0.91       5.8 +/-    0.91  0.100 / 0.120
G24     245.1          34.0                8.0 +/-    1.78      13.0 +/-    1.78  0.040 / 0.030
G25     317.1          15.1                1.4 +/-    1.95       3.4 +/-    1.95  0.040 / 0.040