PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-01:57:20
G02     41.7           47.4                9.0 +/-    0.74      11.7 +/-    0.74  0.030 / 0.050
G05     113.9          68.1               11.7 +/-    0.71      12.5 +/-    0.71  0.030 / 0.050
G06     57.9           11.4                7.8 +/-    2.39      21.2 +/-    2.39  0.030 / 0.030
G12     194.7          59.9               12.6 +/-    1.06      14.3 +/-    1.06  0.030 / 0.030
G25     279.5          58.2               10.4 +/-    0.93      12.0 +/-    0.93  0.050 / 0.050
G29     315.9          38.6               11.3 +/-    1.04      16.8 +/-    1.04  0.050 / 0.050