PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-05:12:40
G01     118.6          18.1                6.7 +/-    0.90      15.4 +/-    0.90  0.040 / 0.040
G07     84.9           64.8                6.4 +/-    0.49       7.0 +/-    0.49  0.040 / 0.030
G08     43.9           28.6                2.5 +/-    0.70       4.4 +/-    0.70  0.060 / 0.120
G09     174.6          22.7                6.9 +/-    1.11      14.2 +/-    1.11  0.060 / 0.110
G11     103.8          40.3                8.3 +/-    0.70      12.0 +/-    0.70  0.100 / 0.430
G13     317.2          20.3                4.3 +/-    3.60       9.5 +/-    3.60  0.170 / 0.350
G17     200.7          27.5                7.6 +/-    2.54      14.0 +/-    2.54  0.050 / 0.060
G28     290.9          56.5                5.8 +/-    0.80       6.8 +/-    0.80  0.050 / 0.060
G30     343.9          68.0                4.2 +/-    0.80       4.5 +/-    0.80  0.030 / 0.040