PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-04:43:00
G10     257.9          32.2                9.2 +/-    2.37      15.4 +/-    2.37  0.040 / 0.040
G13     47.2           25.0                6.6 +/-    2.46      12.8 +/-    2.46  0.040 / 0.040
G15     71.5           54.7                7.6 +/-    0.44       9.1 +/-    0.44  0.510 / 0.340
G20     310.4          67.7                8.6 +/-    0.41       9.2 +/-    0.41  0.120 / 0.170
G21     344.1          65.6                8.6 +/-    0.46       9.3 +/-    0.46  0.090 / 0.150
G26     259.0          12.1               10.5 +/-    1.71      27.9 +/-    1.71  0.130 / 0.130
G27     321.7          11.9                2.1 +/-   16.22       5.5 +/-   16.22  0.040 / 0.040
G29     167.0          41.5                8.5 +/-    0.97      12.0 +/-    0.97  0.040 / 0.030