PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/30-22:13:30
G03     208.4          54.0                9.4 +/-    0.73      11.4 +/-    0.73  0.070 / 0.170
G07     261.3          20.4               10.6 +/-    1.78      23.0 +/-    1.78  0.070 / 0.180
G09     313.0          33.3                7.8 +/-    1.50      12.8 +/-    1.50  0.050 / 0.050
G16     87.9           64.7               10.1 +/-    0.67      11.1 +/-    0.67  0.040 / 0.060
G22     187.6          37.3                8.9 +/-    1.14      13.5 +/-    1.14  0.040 / 0.040
G23     331.4          61.7               10.0 +/-    0.61      11.2 +/-    0.61  0.040 / 0.040
G26     52.1           42.8                7.9 +/-    0.81      11.0 +/-    0.81  0.100 / 0.300
G27     133.7          12.6               10.6 +/-    1.85      27.9 +/-    1.85  0.080 / 0.310
G31     60.6           11.3                6.3 +/-    2.09      17.1 +/-    2.09  0.060 / 0.070