PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-06:43:10
G10     292.9          50.8                7.0 +/-    0.95       8.7 +/-    0.95  0.040 / 0.050
G15     46.6           30.2                4.3 +/-    0.85       7.5 +/-    0.85  0.040 / 0.040
G20     343.8          65.3                5.1 +/-    0.73       5.5 +/-    0.73  0.050 / 0.050
G21     86.4           74.7                6.8 +/-    1.20       7.0 +/-    1.20  0.040 / 0.050
G24     100.7          24.9                6.7 +/-    0.85      13.1 +/-    0.85  0.060 / 0.100
G27     305.8          31.5                5.0 +/-    1.69       8.4 +/-    1.69  0.060 / 0.110
G32     209.8          23.9                4.6 +/-    2.72       9.2 +/-    2.72  0.060 / 0.140