PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/28-04:12:50
G07     343.9          61.4                4.2 +/-    0.43       4.7 +/-    0.43  0.130 / 0.090
G08     87.2           52.3                6.0 +/-    0.46       7.4 +/-    0.46  0.110 / 0.110
G09     185.5          67.3                5.8 +/-    0.27       6.2 +/-    0.27  0.030 / 0.030
G11     141.7          16.5                7.8 +/-    2.65      18.6 +/-    2.65  0.040 / 0.040
G23     157.7          36.5                7.3 +/-    0.75      11.3 +/-    0.75  0.040 / 0.040
G27     49.1           27.4                3.4 +/-    1.59       6.2 +/-    1.59  0.050 / 0.040
G28     242.9          35.0                6.5 +/-    2.51      10.4 +/-    2.51  0.030 / 0.020
G30     307.5          39.9                3.7 +/-    1.45       5.4 +/-    1.45  0.030 / 0.020