PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/23-07:43:10
G08     311.9          18.0                3.9 +/-    1.95       9.1 +/-    1.95  0.040 / 0.040
G10     328.7          59.6                3.0 +/-    0.61       3.5 +/-    0.61  0.040 / 0.040
G14     216.2          28.8                4.3 +/-    1.79       7.7 +/-    1.79  0.060 / 0.070
G15     46.5           11.6                2.7 +/-    2.79       7.2 +/-    2.79  0.050 / 0.080
G20     32.5           61.3                3.0 +/-    0.48       3.4 +/-    0.48  0.030 / 0.020
G21     131.4          58.1                7.6 +/-    0.64       8.8 +/-    0.64  0.030 / 0.030
G24     76.2           29.7                5.4 +/-    1.20       9.6 +/-    1.20  0.080 / 0.090
G27     280.6          37.4                7.3 +/-    1.73      11.1 +/-    1.73  0.090 / 0.070
G32     220.7          44.6                6.4 +/-    1.51       8.7 +/-    1.51  0.190 / 0.260