PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/25-08:58:00
G10     294.7          51.4                7.5 +/-    2.15       9.3 +/-    2.15  0.030 / 0.030
G15     46.4           29.2                4.2 +/-    1.42       7.5 +/-    1.42  0.030 / 0.030
G20     347.2          65.4                5.2 +/-    0.74       5.7 +/-    0.74  0.080 / 0.060
G21     94.2           72.9                6.2 +/-    0.70       6.4 +/-    0.70  0.080 / 0.080
G24     98.5           25.4                5.9 +/-    1.41      11.4 +/-    1.41  0.080 / 0.150
G27     304.8          31.8                6.5 +/-    1.40      11.0 +/-    1.40  0.080 / 0.160
G32     210.3          25.1                6.5 +/-    1.59      12.6 +/-    1.59  0.070 / 0.090