PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-04:12:20
G10     246.2          22.8               10.6 +/-    2.37      21.8 +/-    2.37  0.030 / 0.040
G13     58.9           32.8                6.5 +/-    1.64      10.8 +/-    1.64  0.030 / 0.040
G15     97.8           57.8                9.8 +/-    0.62      11.3 +/-    0.62  0.060 / 0.110
G20     278.1          62.4               10.2 +/-    0.76      11.3 +/-    0.76  0.050 / 0.150
G21     326.9          56.1                9.2 +/-    0.49      10.8 +/-    0.49  0.030 / 0.030
G26     271.5          17.6                9.8 +/-    1.92      22.8 +/-    1.92  0.040 / 0.030
G29     163.6          56.7               10.6 +/-    0.38      12.4 +/-    0.38  0.030 / 0.040