PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/27-10:42:30
G10     293.6          51.0                5.7 +/-    2.75       7.0 +/-    2.75  0.030 / 0.040
G15     46.6           30.2                3.6 +/-    1.20       6.3 +/-    1.20  0.030 / 0.030
G20     345.6          65.4                5.4 +/-    0.81       5.8 +/-    0.81  0.110 / 0.110
G21     94.9           72.0                7.4 +/-    0.32       7.8 +/-    0.32  0.120 / 0.090
G24     98.5           25.1                6.5 +/-    0.79      12.7 +/-    0.79  0.100 / 0.110
G27     305.7          31.2                5.7 +/-    1.07       9.7 +/-    1.07  0.140 / 0.080
G32     209.9          25.5                5.4 +/-    0.79      10.4 +/-    0.79  0.080 / 0.060