PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/09-09:58:00
G02     32.9           54.9                6.2 +/-    0.87       7.4 +/-    0.87  0.030 / 0.030
G05     147.2          59.0                9.4 +/-    1.29      10.8 +/-    1.29  0.020 / 0.030
G06     51.9           17.3                4.6 +/-    2.03      10.9 +/-    2.03  0.090 / 0.150
G12     196.1          69.8                8.5 +/-    0.70       9.0 +/-    0.70  0.100 / 0.180
G25     300.2          51.8                6.5 +/-    1.71       8.1 +/-    1.71  0.040 / 0.030
G29     304.6          25.1                4.6 +/-    1.28       8.9 +/-    1.28  0.030 / 0.030