PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-00:42:20
G02     32.9           55.7                8.7 +/-    0.83      10.3 +/-    0.83  0.030 / 0.030
G05     137.9          61.8               11.2 +/-    0.45      12.5 +/-    0.45  0.040 / 0.030
G06     53.5           15.8                8.0 +/-    1.71      19.5 +/-    1.71  0.030 / 0.030
G12     198.7          68.4                9.6 +/-    0.44      10.3 +/-    0.44  0.030 / 0.030
G19     98.8           11.7               10.4 +/-    2.57      27.9 +/-    2.57  0.160 / 0.180
G25     299.0          52.3                8.9 +/-    2.03      10.9 +/-    2.03  0.270 / 0.190
G29     306.2          26.4                8.7 +/-    1.00      16.4 +/-    1.00  0.040 / 0.040