PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/26-17:43:00
G01     320.1          15.2                6.9 +/-    3.41      17.1 +/-    3.41  0.110 / 0.270
G08     258.4          15.0                7.7 +/-    2.38      19.2 +/-    2.38  0.170 / 0.230
G10     74.7           54.4               11.4 +/-    1.01      13.7 +/-    1.01  0.040 / 0.030
G11     305.0          22.3                8.3 +/-    0.79      17.2 +/-    0.79  0.030 / 0.030
G14     287.7          70.3               10.7 +/-    0.82      11.3 +/-    0.82  0.050 / 0.040
G18     305.6          41.0                7.6 +/-    2.37      10.9 +/-    2.37  0.050 / 0.040
G20     102.4          31.4               12.5 +/-    0.87      21.3 +/-    0.87  0.080 / 0.180
G27     228.9          11.7                8.8 +/-    1.69      23.6 +/-    1.69  0.090 / 0.130
G31     180.2          34.4               14.7 +/-    0.77      23.5 +/-    0.77  0.160 / 0.200
G32     356.4          70.5               10.4 +/-    0.74      11.0 +/-    0.74  0.160 / 0.290