PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/18-01:28:00
G08     315.3          15.9                7.0 +/-    3.12      17.1 +/-    3.12  0.050 / 0.060
G10     314.2          56.3                7.9 +/-    0.84       9.3 +/-    0.84  0.050 / 0.050
G14     213.9          24.2               14.2 +/-    2.92      28.3 +/-    2.92  0.080 / 0.110
G15     45.7           19.8                5.6 +/-    0.67      12.5 +/-    0.67  0.090 / 0.110
G18     20.5           63.4                8.0 +/-    0.58       8.8 +/-    0.58  0.030 / 0.040
G21     122.7          64.9               10.7 +/-    0.72      11.7 +/-    0.72  0.030 / 0.040
G24     86.1           29.9                9.6 +/-    0.50      16.8 +/-    0.50  0.120 / 0.330
G27     284.6          38.0                8.1 +/-    1.26      12.2 +/-    1.26  0.120 / 0.300
G32     217.0          41.9               11.7 +/-    0.47      16.5 +/-    0.47  0.080 / 0.070