PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/14-10:13:00
G02     46.1           42.8                5.2 +/-    1.12       7.2 +/-    1.12  0.020 / 0.020
G05     110.5          69.9                8.1 +/-    1.43       8.6 +/-    1.43  0.030 / 0.030
G12     186.4          52.1                9.5 +/-    0.47      11.7 +/-    0.47  0.050 / 0.040
G25     271.9          58.6                9.7 +/-    1.76      11.2 +/-    1.76  0.040 / 0.040
G29     315.6          37.1                5.2 +/-    0.98       7.9 +/-    0.98  0.050 / 0.060