PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/22-03:58:00
G02     33.0           55.2              -21.3 +/-    0.63     -25.3 +/-    0.63  0.030 / 0.030
G05     138.9          61.5                4.9 +/-    0.63       5.5 +/-    0.63  0.030 / 0.030
G06     51.5           20.7                3.0 +/-    2.30       6.6 +/-    2.30  0.060 / 0.050
G12     207.2          71.0                3.6 +/-    0.52       3.8 +/-    0.52  0.080 / 0.040
G19     98.8           10.4                4.7 +/-    1.42      13.0 +/-    1.42  0.170 / 0.280
G25     296.7          54.3                2.5 +/-    1.99       2.9 +/-    1.99  0.170 / 0.320
G29     309.4          32.3                2.0 +/-    1.34       3.3 +/-    1.34  0.030 / 0.030