PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-14:28:00
G03     316.5          43.8                5.7 +/-    1.36       7.8 +/-    1.36  0.040 / 0.090
G11     242.6          14.6                6.3 +/-    2.12      15.9 +/-    2.12  0.050 / 0.080
G14     53.7           45.5                7.5 +/-    1.15      10.1 +/-    1.15  0.100 / 0.160
G18     224.8          30.9                6.9 +/-    2.35      11.9 +/-    2.35  0.070 / 0.200
G22     307.1          66.8                7.4 +/-    0.69       8.0 +/-    0.69  0.030 / 0.040
G25     43.2           12.7                5.8 +/-    2.70      15.3 +/-    2.70  0.030 / 0.040
G26     137.9          35.4                9.3 +/-    1.70      14.6 +/-    1.70  0.090 / 0.380
G31     42.3           60.6                7.1 +/-    0.45       8.0 +/-    0.45  0.090 / 0.260
G32     74.8           24.1                7.8 +/-    2.51      15.6 +/-    2.51  0.050 / 0.060