PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-06:58:10
G10     297.4          52.3                6.3 +/-    1.67       7.7 +/-    1.67  0.050 / 0.030
G14     209.6          11.6               -4.0 +/-   17.07     -10.7 +/-   17.07  0.040 / 0.030
G15     46.0           27.5                2.8 +/-    1.56       5.1 +/-    1.56  0.060 / 0.060
G20     351.3          65.3                5.0 +/-    0.35       5.5 +/-    0.35  0.080 / 0.050
G21     96.9           73.0                4.7 +/-    0.84       4.9 +/-    0.84  0.070 / 0.100
G24     97.4           26.1                5.7 +/-    2.65      10.9 +/-    2.65  0.080 / 0.090
G27     302.8          33.0                5.2 +/-    2.04       8.6 +/-    2.04  0.230 / 0.520
G32     210.9          26.7                6.7 +/-    2.46      12.6 +/-    2.46  0.210 / 0.400