PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-04:42:30
G01     315.4          24.5                5.4 +/-    2.02      10.6 +/-    2.02  0.040 / 0.020
G10     90.5           49.6                6.8 +/-    0.58       8.6 +/-    0.58  0.030 / 0.030
G11     293.4          28.0                4.3 +/-    0.75       7.9 +/-    0.75  0.040 / 0.030
G14     328.4          71.1                5.3 +/-    0.99       5.6 +/-    0.99  0.030 / 0.040
G18     107.7          24.9                4.8 +/-    2.10       9.3 +/-    2.10  0.150 / 0.210
G22     304.4          16.8                3.7 +/-    3.29       8.7 +/-    3.29  0.280 / 0.210
G25     89.4           11.8                6.7 +/-    2.23      18.0 +/-    2.23  0.130 / 0.160
G31     174.2          50.6                6.9 +/-    0.70       8.7 +/-    0.70  0.110 / 0.150
G32     18.5           62.5                5.1 +/-    0.95       5.7 +/-    0.95  0.140 / 0.180