PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/22-14:13:10
G10     259.4          33.9                4.1 +/-    2.81       6.7 +/-    2.81  0.060 / 0.040
G13     45.9           23.4                3.2 +/-    1.01       6.4 +/-    1.01  0.060 / 0.050
G15     70.0           54.6                4.5 +/-    0.41       5.4 +/-    0.41  0.180 / 0.390
G16     288.2          13.9                2.0 +/-    1.73       5.1 +/-    1.73  0.070 / 0.180
G20     284.4          56.7                5.2 +/-    1.15       6.1 +/-    1.15  0.060 / 0.210
G21     356.2          68.8                2.7 +/-    0.78       2.8 +/-    0.78  0.060 / 0.110
G24     122.7          10.4              -14.4 +/-   28.74     -39.8 +/-   28.74  0.060 / 0.110
G26     262.3          11.4                2.1 +/-    2.21       5.6 +/-    2.21  0.040 / 0.040
G27     322.3          10.5              -15.7 +/-   12.21     -43.4 +/-   12.21  0.040 / 0.040
G29     165.5          37.6                6.7 +/-    1.10      10.1 +/-    1.10  0.040 / 0.080