PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-12:57:30
G02     4.3            74.2                3.3 +/-    0.43       3.4 +/-    0.43  0.030 / 0.050
G05     163.4          37.9                7.1 +/-    0.56      10.7 +/-    0.56  0.040 / 0.070
G06     42.3           38.7                2.3 +/-    1.16       3.5 +/-    1.16  0.110 / 0.210
G12     300.3          74.8                5.3 +/-    0.68       5.5 +/-    0.68  0.200 / 0.310
G19     81.1           22.7                3.5 +/-    1.05       7.3 +/-    1.05  0.020 / 0.030
G24     225.6          19.3                4.1 +/-    1.84       9.2 +/-    1.84  0.020 / 0.020
G25     315.9          35.0                4.3 +/-    0.95       6.8 +/-    0.95  0.040 / 0.050
G29     292.6          16.8                4.2 +/-    2.28      10.1 +/-    2.28  0.050 / 0.060