PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/10-21:58:10
G01     46.7           22.8                9.1 +/-    1.84      18.6 +/-    1.84  0.050 / 0.050
G06     178.9          26.0               14.8 +/-    2.30      28.2 +/-    2.30  0.040 / 0.040
G11     43.5           11.0                9.3 +/-    2.34      25.4 +/-    2.34  0.280 / 0.350
G13     245.7          28.7               13.5 +/-    2.19      24.3 +/-    2.19  0.420 / 0.340
G15     279.2          15.1               10.0 +/-    1.70      24.7 +/-    1.70  0.060 / 0.060
G17     337.7          77.1               11.6 +/-    0.53      11.8 +/-    0.53  0.070 / 0.070
G19     252.8          63.1               11.6 +/-    0.58      12.8 +/-    0.58  0.050 / 0.030
G24     318.3          12.3                6.6 +/-   12.30      17.5 +/-   12.30  0.040 / 0.030
G28     52.6           54.1               11.2 +/-    1.63      13.5 +/-    1.63  0.060 / 0.110
G30     151.1          36.2               14.0 +/-    1.06      21.7 +/-    1.06  0.070 / 0.190