PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/10-05:42:40
G01     93.9           30.9                4.9 +/-    1.76       8.4 +/-    1.76  0.030 / 0.040
G07     122.4          47.7                6.4 +/-    0.87       8.3 +/-    0.87  0.030 / 0.040
G08     42.2           9.9                 2.1 +/-    4.25       6.0 +/-    4.25  0.030 / 0.040
G11     73.3           40.7                3.9 +/-    1.09       5.7 +/-    1.09  0.040 / 0.050
G13     299.4          33.9                2.9 +/-    2.02       4.6 +/-    2.02  0.200 / 0.190
G17     212.2          51.4                6.8 +/-    0.60       8.5 +/-    0.60  0.110 / 0.720
G19     213.1          25.3                5.2 +/-    1.25      10.1 +/-    1.25  0.030 / 0.040
G28     344.3          61.8                3.5 +/-    0.42       3.9 +/-    0.42  0.030 / 0.040
G30     94.3           76.7                4.9 +/-    0.41       5.0 +/-    0.41  0.090 / 0.100