PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/25-09:57:40
G02     33.5           54.9                4.5 +/-    0.44       5.4 +/-    0.44  0.040 / 0.040
G05     140.9          62.2                6.7 +/-    0.67       7.5 +/-    0.67  0.040 / 0.050
G06     53.2           17.2                2.1 +/-    0.49       4.9 +/-    0.49  0.070 / 0.130
G12     200.3          68.2                4.4 +/-    1.66       4.7 +/-    1.66  0.080 / 0.140
G19     99.6           10.9                4.8 +/-    2.15      13.0 +/-    2.15  0.020 / 0.040
G25     289.1          58.5                4.7 +/-    1.00       5.4 +/-    1.00  0.030 / 0.030
G29     308.6          30.0                3.8 +/-    1.56       6.7 +/-    1.56  0.030 / 0.040