PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-01:57:20
G02     57.8           33.5                8.1 +/-    0.71      13.3 +/-    0.71  0.040 / 0.070
G05     60.6           61.9                8.4 +/-    0.44       9.3 +/-    0.44  0.060 / 0.060
G12     186.8          37.6               10.8 +/-    1.23      16.4 +/-    1.23  0.050 / 0.090
G13     129.0          13.3               11.2 +/-    3.18      29.0 +/-    3.18  0.050 / 0.100
G15     164.1          11.1                3.6 +/-   28.83       9.9 +/-   28.83  0.100 / 0.090
G25     239.7          53.7               10.6 +/-    1.11      12.8 +/-    1.11  0.050 / 0.090
G29     330.2          55.5               10.4 +/-    0.63      12.3 +/-    0.63  0.120 / 0.490