PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-02:27:40
G02     37.7           51.0                6.7 +/-    1.38       8.3 +/-    1.38  0.040 / 0.030
G05     127.1          65.6                8.1 +/-    0.45       8.8 +/-    0.45  0.030 / 0.030
G06     54.9           15.3                4.0 +/-    2.64       9.8 +/-    2.64  0.040 / 0.050
G12     199.1          65.3                7.2 +/-    0.32       7.9 +/-    0.32  0.040 / 0.040
G25     288.6          56.7                9.3 +/-    3.93      10.9 +/-    3.93  0.030 / 0.040
G29     312.7          35.3                6.6 +/-    1.69      10.4 +/-    1.69  0.030 / 0.030