PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-09:42:50
G10     297.3          52.2                5.5 +/-    1.72       6.8 +/-    1.72  0.030 / 0.030
G14     209.6          11.9               -1.6 +/-   13.82      -4.3 +/-   13.82  0.040 / 0.040
G15     46.1           27.7                2.6 +/-    2.21       4.7 +/-    2.21  0.100 / 0.100
G20     351.7          65.3                5.1 +/-    0.65       5.5 +/-    0.65  0.090 / 0.110
G21     100.3          71.3                6.2 +/-    0.72       6.5 +/-    0.72  0.100 / 0.390
G24     96.3           26.1                6.2 +/-    1.63      11.9 +/-    1.63  0.110 / 0.530
G27     303.1          32.6                5.8 +/-    0.99       9.6 +/-    0.99  0.060 / 0.070
G32     210.9          27.2                7.0 +/-    1.73      13.1 +/-    1.73  0.060 / 0.050