PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/01-00:12:40
G02     349.6          77.6                6.8 +/-    0.99       7.0 +/-    0.99  0.120 / 0.130
G05     162.9          34.9               13.5 +/-    2.12      21.5 +/-    2.12  0.110 / 0.150
G06     40.7           42.0                7.0 +/-    0.96       9.9 +/-    0.96  0.130 / 0.170
G12     312.2          68.9                8.4 +/-    0.67       8.9 +/-    0.67  0.140 / 0.150
G17     86.4           10.5               12.0 +/-    2.44      33.1 +/-    2.44  0.030 / 0.030
G19     75.5           26.3                9.6 +/-    0.82      18.3 +/-    0.82  0.030 / 0.030
G24     226.9          21.9               14.1 +/-    1.76      29.6 +/-    1.76  0.050 / 0.080
G25     316.8          29.9                9.3 +/-    1.43      16.3 +/-    1.43  0.050 / 0.080
G29     287.7          12.3               11.1 +/-    2.65      29.6 +/-    2.65  0.060 / 0.060