PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-18:42:10
G02     224.8          66.4               12.8 +/-    0.88      13.8 +/-    0.88  0.040 / 0.080
G06     44.9           64.9               10.4 +/-    0.44      11.3 +/-    0.44  0.030 / 0.080
G12     321.7          47.1                8.3 +/-    1.10      10.9 +/-    1.10  0.050 / 0.100
G17     64.1           27.3                8.5 +/-    0.94      15.7 +/-    0.94  0.060 / 0.080
G19     45.6           46.3                9.2 +/-    0.82      12.1 +/-    0.82  0.040 / 0.060
G24     253.2          39.0               11.3 +/-    1.04      16.8 +/-    1.04  0.040 / 0.050