PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/18-00:42:30
G02     290.2          81.6                7.1 +/-    1.04       7.1 +/-    1.04  0.090 / 0.140
G05     167.4          24.7               12.0 +/-    1.95      23.6 +/-    1.95  0.080 / 0.120
G06     38.8           52.8                7.9 +/-    1.75       9.6 +/-    1.75  0.090 / 0.100
G12     319.7          58.1                8.1 +/-    1.60       9.3 +/-    1.60  0.080 / 0.100
G17     78.2           16.3                7.9 +/-    2.01      19.1 +/-    2.01  0.160 / 0.300
G19     65.6           32.8                7.7 +/-    1.97      12.7 +/-    1.97  0.130 / 0.220
G24     235.1          29.0               10.6 +/-    1.51      19.0 +/-    1.51  0.030 / 0.030
G25     317.4          20.8                6.4 +/-    2.24      13.8 +/-    2.24  0.030 / 0.040