PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/22-01:12:30
G10     311.1          56.3                9.4 +/-    1.83      11.1 +/-    1.83  0.030 / 0.040
G14     212.1          17.8               14.1 +/-    1.03      32.6 +/-    1.03  0.040 / 0.030
G15     45.6           21.0                8.9 +/-    2.35      19.0 +/-    2.35  0.090 / 0.440
G20     9.3            64.4               11.3 +/-    0.42      12.4 +/-    0.42  0.120 / 0.430
G21     115.0          69.4               13.7 +/-    1.05      14.5 +/-    1.05  0.090 / 0.070
G24     90.0           29.0               12.3 +/-    0.90      22.0 +/-    0.90  0.070 / 0.060
G27     292.6          36.7               12.4 +/-    1.83      19.2 +/-    1.83  0.160 / 0.210
G32     213.9          38.2               14.0 +/-    1.56      20.9 +/-    1.56  0.110 / 0.300