PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-09:12:30
G02     289.1          81.1                3.4 +/-    0.44       3.5 +/-    0.44  0.070 / 0.150
G05     169.3          24.0                4.0 +/-    1.51       8.1 +/-    1.51  0.100 / 0.200
G06     39.4           50.3                1.8 +/-    0.50       2.3 +/-    0.50  0.020 / 0.040
G12     319.6          61.4                3.5 +/-    0.62       3.9 +/-    0.62  0.030 / 0.050
G17     80.0           14.2                2.1 +/-    2.17       5.4 +/-    2.17  0.030 / 0.040
G19     65.1           34.3                2.7 +/-    0.94       4.3 +/-    0.94  0.030 / 0.040
G24     230.8          27.7                6.3 +/-    1.96      11.5 +/-    1.96  0.070 / 0.140
G25     317.3          27.0               12.2 +/-    1.16      22.7 +/-    1.16  0.070 / 0.110