PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-03:12:40
G01     119.0          17.7                6.7 +/-    1.20      15.5 +/-    1.20  0.030 / 0.030
G07     84.6           64.6                4.8 +/-    1.03       5.3 +/-    1.03  0.030 / 0.040
G08     44.1           29.0                2.9 +/-    1.76       5.2 +/-    1.76  0.060 / 0.060
G09     175.5          24.4                7.0 +/-    2.34      13.8 +/-    2.34  0.050 / 0.060
G11     104.4          40.2               -2.2 +/-    0.52      -3.3 +/-    0.52  0.100 / 0.260
G13     317.5          19.9                2.6 +/-    1.67       5.8 +/-    1.67  0.170 / 0.320
G17     200.4          27.0                7.2 +/-    1.38      13.5 +/-    1.38  0.040 / 0.030
G28     289.2          56.0                4.7 +/-    2.09       5.6 +/-    2.09  0.030 / 0.020
G30     343.5          67.7                3.9 +/-    0.63       4.1 +/-    0.63  0.100 / 0.140