PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/04-03:42:40
G07     45.4           69.1                5.4 +/-    1.16       5.7 +/-    1.16  0.070 / 0.300
G08     52.4           40.4                4.2 +/-    1.04       6.0 +/-    1.04  0.140 / 0.170
G09     176.4          38.4                7.7 +/-    1.10      11.5 +/-    1.10  0.030 / 0.030
G11     120.8          33.3                8.3 +/-    1.28      13.6 +/-    1.28  0.030 / 0.040
G17     198.4          13.0                4.8 +/-    2.43      12.6 +/-    2.43  0.030 / 0.030
G23     161.5          13.6                7.2 +/-    2.42      18.6 +/-    2.42  0.030 / 0.030
G27     38.6           12.7                3.0 +/-    2.51       8.0 +/-    2.51  0.170 / 0.370
G28     267.7          48.9                5.6 +/-    4.30       7.1 +/-    4.30  0.320 / 0.410
G30     326.3          55.8                5.1 +/-    0.77       6.1 +/-    0.77  0.160 / 0.080