PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/23-01:28:00
G02     24.4           62.2                7.9 +/-    0.97       8.8 +/-    0.97  0.060 / 0.080
G05     149.9          53.9               11.1 +/-    0.54      13.4 +/-    0.54  0.070 / 0.070
G06     47.7           25.8                7.5 +/-    2.19      14.4 +/-    2.19  0.030 / 0.020
G12     235.7          77.8                9.7 +/-    0.41       9.9 +/-    0.41  0.030 / 0.030
G19     92.0           15.0                9.7 +/-    3.38      24.1 +/-    3.38  0.040 / 0.040
G25     307.5          47.1                9.3 +/-    1.51      12.2 +/-    1.51  0.030 / 0.040
G29     302.2          24.8                8.2 +/-    1.18      16.2 +/-    1.18  0.160 / 0.110