PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/04-22:28:10
G08     309.4          19.3               16.5 +/-    2.94      37.0 +/-    2.94  0.050 / 0.070
G10     328.3          59.3               14.9 +/-    1.37      17.0 +/-    1.37  0.050 / 0.060
G14     217.6          31.2               19.5 +/-    1.90      33.3 +/-    1.90  0.070 / 0.180
G15     46.6           11.6               13.5 +/-    2.89      36.4 +/-    2.89  0.070 / 0.190
G18     37.3           59.7               15.6 +/-    0.38      17.8 +/-    0.38  0.090 / 0.120
G21     132.9          56.0               17.7 +/-    0.50      20.8 +/-    0.50  0.280 / 0.330
G24     76.8           30.6               17.0 +/-    0.67      29.3 +/-    0.67  0.040 / 0.050
G27     274.3          37.8               19.3 +/-    1.12      29.1 +/-    1.12  0.040 / 0.050