PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-01:57:30
G02     41.7           47.4                9.7 +/-    1.23      12.6 +/-    1.23  0.030 / 0.040
G05     113.9          68.1               12.1 +/-    0.41      13.0 +/-    0.41  0.030 / 0.040
G06     57.9           11.4                8.3 +/-    2.73      22.4 +/-    2.73  0.030 / 0.020
G12     194.7          59.9               13.5 +/-    0.36      15.3 +/-    0.36  0.020 / 0.030
G25     279.5          58.2                9.7 +/-    2.40      11.2 +/-    2.40  0.050 / 0.060
G29     315.9          38.6               10.7 +/-    0.82      15.9 +/-    0.82  0.050 / 0.060