PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/23-10:12:40
G02     36.2           52.6                3.5 +/-    0.63       4.3 +/-    0.63  0.120 / 0.270
G05     135.4          64.6                5.0 +/-    0.32       5.5 +/-    0.32  0.150 / 0.180
G06     55.0           14.9                3.0 +/-    2.46       7.6 +/-    2.46  0.020 / 0.030
G12     196.6          64.8                4.9 +/-    0.40       5.4 +/-    0.40  0.020 / 0.040
G25     282.9          59.9                8.8 +/-    1.93      10.0 +/-    1.93  0.030 / 0.030
G29     310.7          32.2                2.9 +/-    1.30       4.9 +/-    1.30  0.030 / 0.030