PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/22-04:12:50
G01     84.4           32.7                3.9 +/-    0.91       6.4 +/-    0.91  0.050 / 0.080
G07     129.8          38.8                6.0 +/-    0.49       8.9 +/-    0.49  0.050 / 0.080
G11     61.7           36.5                2.9 +/-    0.72       4.4 +/-    0.72  0.040 / 0.050
G13     288.5          37.7                2.2 +/-    1.18       3.3 +/-    1.18  0.040 / 0.060
G15     312.9          11.1                0.4 +/-    4.79       1.0 +/-    4.79  0.100 / 0.270
G17     217.6          61.3                5.3 +/-    0.94       6.0 +/-    0.94  0.100 / 0.280
G18     55.8           20.7                1.5 +/-    1.09       3.2 +/-    1.09  0.110 / 0.120
G19     216.7          29.6                5.2 +/-    1.52       9.2 +/-    1.52  0.080 / 0.120
G28     353.5          61.6                3.6 +/-    1.06       4.0 +/-    1.06  0.030 / 0.040
G30     116.6          73.8                5.2 +/-    0.86       5.4 +/-    0.86  0.030 / 0.040