PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-06:57:50
G08     307.9          19.8                3.5 +/-    1.68       7.8 +/-    1.68  0.050 / 0.060
G10     338.9          61.0                2.4 +/-    0.59       2.8 +/-    0.59  0.080 / 0.090
G14     218.8          33.5                5.6 +/-    1.30       9.2 +/-    1.30  0.030 / 0.020
G20     42.1           59.3                3.8 +/-    0.92       4.4 +/-    0.92  0.030 / 0.030
G24     70.6           29.4                4.7 +/-    1.85       8.4 +/-    1.85  0.130 / 0.190
G27     273.7          37.0                5.4 +/-    2.01       8.2 +/-    2.01  0.090 / 0.150
G32     224.7          50.2                6.9 +/-    2.30       8.7 +/-    2.30  0.070 / 0.090