PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/15-07:43:10
G10     303.0          54.0                5.9 +/-    1.17       7.1 +/-    1.17  0.030 / 0.030
G14     210.5          15.0                3.7 +/-    3.59       9.2 +/-    3.59  0.030 / 0.030
G15     45.6           24.3                4.8 +/-    2.30       9.6 +/-    2.30  0.180 / 0.540
G20     0.2            65.0                5.1 +/-    0.52       5.6 +/-    0.52  0.210 / 0.400
G21     107.4          70.3                7.4 +/-    0.54       7.9 +/-    0.54  0.160 / 0.180
G24     93.2           27.4                4.7 +/-    1.17       8.6 +/-    1.17  0.080 / 0.190
G27     299.0          34.5                4.4 +/-    1.42       7.0 +/-    1.42  0.070 / 0.030
G32     212.6          29.3                7.6 +/-    3.06      13.5 +/-    3.06  0.050 / 0.040