PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-07:43:10
G08     308.8          19.5                3.5 +/-    1.55       7.8 +/-    1.55  0.050 / 0.050
G10     335.9          60.6                4.5 +/-    0.50       5.0 +/-    0.50  0.040 / 0.060
G14     218.1          32.2                6.3 +/-    2.20      10.6 +/-    2.20  0.090 / 0.090
G20     39.6           59.9                4.9 +/-    0.55       5.6 +/-    0.55  0.080 / 0.090
G21     135.2          54.7                8.6 +/-    0.65      10.3 +/-    0.65  0.040 / 0.030
G24     72.0           29.5                5.9 +/-    1.25      10.4 +/-    1.25  0.030 / 0.030
G27     275.7          37.1                6.5 +/-    1.54      10.0 +/-    1.54  0.110 / 0.230
G32     223.5          48.3                8.1 +/-    2.57      10.4 +/-    2.57  0.090 / 0.180