PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/20-01:12:50
G05     53.1947        9.8790           7.7350 +/-  3.7393   21.6294 +/-  3.7393  0.080 / 0.410
G10     244.5995       20.3538         13.3222 +/-  3.2721   29.0614 +/-  3.2721  0.100 / 0.390
G13     62.1766        34.6942          9.9429 +/-  0.7286   15.8694 +/-  0.7286  0.100 / 0.160
G15     107.7479       57.9257         10.9165 +/-  0.3708   12.6338 +/-  0.3708  0.130 / 0.200
G16     304.1828       14.4630          6.8666 +/-  2.0301   17.3028 +/-  2.0301  0.130 / 0.310
G18     257.7319       49.5487         10.7912 +/-  2.4360   13.6855 +/-  2.4360  0.180 / 0.280
G20     38.7653        53.5801          8.8524 +/-  0.8051   10.7093 +/-  0.8051  0.030 / 0.040
G21     324.3612       54.9131          9.5034 +/-  0.7131   11.3336 +/-  0.7131  0.040 / 0.040
G26     276.4290       18.0037         11.5743 +/-  1.3247   26.7455 +/-  1.3247  0.270 / 0.380
G29     161.9861       56.5934         10.4171 +/-  0.5598   12.2122 +/-  0.5598  0.120 / 0.430