PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/22-12:43:10
G08     266.8          15.7                6.0 +/-    0.98      14.7 +/-    0.98  0.040 / 0.040
G10     69.8           56.5                3.2 +/-    0.54       3.8 +/-    0.54  0.030 / 0.040
G11     309.8          18.1                3.9 +/-    2.08       9.0 +/-    2.08  0.190 / 0.570
G14     274.7          66.6                5.2 +/-    0.69       5.6 +/-    0.69  0.110 / 0.480
G18     98.1           30.3               19.3 +/-    1.81      33.6 +/-    1.81  0.140 / 0.160
G21     155.0          9.7                 4.8 +/-    5.03      13.5 +/-    5.03  0.310 / 0.280
G27     227.5          12.3                3.4 +/-    3.18       8.9 +/-    3.18  0.110 / 0.090
G31     176.2          36.9                5.7 +/-    1.04       8.8 +/-    1.04  0.090 / 0.120
G32     357.9          70.8                3.8 +/-    0.65       4.0 +/-    0.65  0.030 / 0.030