PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-20:43:10
G01     230.2          21.1                9.3 +/-    2.31      19.9 +/-    2.31  0.040 / 0.030
G03     298.9          64.3                8.5 +/-    0.82       9.4 +/-    0.82  0.050 / 0.040
G14     81.9           26.9                8.8 +/-    1.19      16.6 +/-    1.19  0.130 / 0.240
G16     152.5          38.4               12.5 +/-    1.02      18.7 +/-    1.02  0.270 / 0.190
G22     233.4          74.1               10.0 +/-    0.75      10.4 +/-    0.75  0.110 / 0.170
G23     302.1          31.7                9.5 +/-    1.25      16.0 +/-    1.25  0.090 / 0.150
G26     113.1          52.9               11.5 +/-    0.66      14.0 +/-    0.66  0.100 / 0.110
G31     42.0           41.8                6.8 +/-    1.17       9.6 +/-    1.17  0.050 / 0.110
G32     94.5           10.5               10.4 +/-    1.32      28.7 +/-    1.32  0.070 / 0.090